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101312001100 = 225210916195741
BaseRepresentation
bin101111001011010101…
…0100111010001001100
3100200111121101220102001
41132112222213101030
53124441333013400
6114313031442044
710214414541412
oct1362652472114
9320447356361
10101312001100
1139a69a8aa32
1217775226324
13972758a05b
144c913c72b2
15297e4eaa6a
hex1796aa744c

101312001100 has 72 divisors (see below), whose sum is σ = 222039694800. Its totient is φ = 40121222400.

The previous prime is 101312001061. The next prime is 101312001101. The reversal of 101312001100 is 1100213101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (101312001101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17644230 + ... + 17649970.

It is an arithmetic number, because the mean of its divisors is an integer number (3083884650).

Almost surely, 2101312001100 is an apocalyptic number.

101312001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101312001100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111019847400).

101312001100 is an abundant number, since it is smaller than the sum of its proper divisors (120727693700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101312001100 is a wasteful number, since it uses less digits than its factorization.

101312001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7483 (or 7476 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 101312001100 its reverse (1100213101), we get a palindrome (102412214201).

The spelling of 101312001100 in words is "one hundred one billion, three hundred twelve million, one thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 109 218 436 545 1090 1619 2180 2725 3238 5450 5741 6476 8095 10900 11482 16190 22964 28705 32380 40475 57410 80950 114820 143525 161900 176471 287050 352942 574100 625769 705884 882355 1251538 1764710 2503076 3128845 3529420 4411775 6257690 8823550 9294679 12515380 15644225 17647100 18589358 31288450 37178716 46473395 62576900 92946790 185893580 232366975 464733950 929467900 1013120011 2026240022 4052480044 5065600055 10131200110 20262400220 25328000275 50656000550 101312001100