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1310201231020 = 2251110954637249
BaseRepresentation
bin10011000100001110000…
…101000011011010101100
311122020212011202200102021
4103010032011003122230
5132431243003343040
62441521555235524
7163442002465603
oct23041605033254
94566764680367
101310201231020
11465720490030
12191b138a8ba4
13967226b0306
14475b2330a3a
15241347d224a
hex1310e1436ac

1310201231020 has 48 divisors (see below), whose sum is σ = 3029089140000. Its totient is φ = 472065822720.

The previous prime is 1310201230963. The next prime is 1310201231021. The reversal of 1310201231020 is 201321020131.

It is a junction number, because it is equal to n+sod(n) for n = 1310201230985 and 1310201231003.

It is not an unprimeable number, because it can be changed into a prime (1310201231021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27294645 + ... + 27342604.

It is an arithmetic number, because the mean of its divisors is an integer number (63106023750).

Almost surely, 21310201231020 is an apocalyptic number.

1310201231020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310201231020 is an abundant number, since it is smaller than the sum of its proper divisors (1718887908980).

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

1310201231020 is a wasteful number, since it uses less digits than its factorization.

1310201231020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54637378 (or 54637376 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1310201231020 its reverse (201321020131), we get a palindrome (1511522251151).

The spelling of 1310201231020 in words is "one trillion, three hundred ten billion, two hundred one million, two hundred thirty-one thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 109 110 218 220 436 545 1090 1199 2180 2398 4796 5995 11990 23980 54637249 109274498 218548996 273186245 546372490 601009739 1092744980 1202019478 2404038956 3005048695 5955460141 6010097390 11910920282 12020194780 23821840564 29777300705 59554601410 65510061551 119109202820 131020123102 262040246204 327550307755 655100615510 1310201231020