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13231100120 = 235779598151
BaseRepresentation
bin11000101001010001…
…01001000011011000
31021011002122112020012
430110220221003120
5204044130200440
610024524221052
7645610331630
oct142450510330
937132575205
1013231100120
11567a67a397
12269309a788
13132b227934
148d73256c0
155268a0e65
hex314a290d8

13231100120 has 64 divisors (see below), whose sum is σ = 34453555200. Its totient is φ = 4478947200.

The previous prime is 13231100117. The next prime is 13231100159. The reversal of 13231100120 is 2100113231.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 13231100095 and 13231100104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276956 + ... + 321195.

It is an arithmetic number, because the mean of its divisors is an integer number (538336800).

Almost surely, 213231100120 is an apocalyptic number.

13231100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13231100120 is an abundant number, since it is smaller than the sum of its proper divisors (21222455080).

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

13231100120 is a wasteful number, since it uses less digits than its factorization.

13231100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598248 (or 598244 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 13231100120 its reverse (2100113231), we get a palindrome (15331213351).

The spelling of 13231100120 in words is "thirteen billion, two hundred thirty-one million, one hundred thousand, one hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 79 140 158 280 316 395 553 632 790 1106 1580 2212 2765 3160 4424 5530 11060 22120 598151 1196302 2392604 2990755 4187057 4785208 5981510 8374114 11963020 16748228 20935285 23926040 33496456 41870570 47253929 83741140 94507858 167482280 189015716 236269645 330777503 378031432 472539290 661555006 945078580 1323110012 1653887515 1890157160 2646220024 3307775030 6615550060 13231100120