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3131012104012 = 2213233184448487
BaseRepresentation
bin101101100011111110110…
…111010011111101001100
3102002022200121122201202201
4231203332313103331030
5402244303044312022
610354211143331244
7442131253524022
oct55437667237514
912068617581681
103131012104012
11aa7944786601
12426989750b24
1319933a2bc040
14ab782980712
15566a137a127
hex2d8fedd3f4c

3131012104012 has 48 divisors (see below), whose sum is σ = 6355931000832. Its totient is φ = 1337664018240.

The previous prime is 3131012103997. The next prime is 3131012104093. The reversal of 3131012104012 is 2104012101313.

It is a super-3 number, since 3×31310121040123 (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42187168 + ... + 42261319.

It is an arithmetic number, because the mean of its divisors is an integer number (132415229184).

Almost surely, 23131012104012 is an apocalyptic number.

It is an amenable number.

3131012104012 is an abundant number, since it is smaller than the sum of its proper divisors (3224918896820).

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

3131012104012 is a wasteful number, since it uses less digits than its factorization.

3131012104012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84448558 (or 84448556 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 3131012104012 its reverse (2104012101313), we get a palindrome (5235024205325).

The spelling of 3131012104012 in words is "three trillion, one hundred thirty-one billion, twelve million, one hundred four thousand, twelve".

Divisors: 1 2 4 13 23 26 31 46 52 62 92 124 299 403 598 713 806 1196 1426 1612 2852 9269 18538 37076 84448487 168896974 337793948 1097830331 1942315201 2195660662 2617903097 3884630402 4391321324 5235806194 7769260804 10471612388 25250097613 34032740261 50500195226 60211771231 68065480522 101000390452 120423542462 136130961044 240847084924 782753026003 1565506052006 3131012104012