31132123131012 has 12 divisors (see below), whose sum is σ = 72641620639056. Its totient is φ = 10377374377000.

The previous prime is 31132123130989. The next prime is 31132123131073. The reversal of 31132123131012 is 21013132123113.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×31132123131012² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1297171797114 + ... + 1297171797137.

It is an arithmetic number, because the mean of its divisors is an integer number (6053468386588).

Almost surely, 2^{31132123131012} is an apocalyptic number.

It is an amenable number.

31132123131012 is an abundant number, since it is smaller than the sum of its proper divisors (41509497508044).

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

31132123131012 is a wasteful number, since it uses less digits than its factorization.

31132123131012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594343594258 (or 2594343594256 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 31132123131012 its reverse (21013132123113), we get a palindrome (52145255254125).

The spelling of 31132123131012 in words is "thirty-one trillion, one hundred thirty-two billion, one hundred twenty-three million, one hundred thirty-one thousand, twelve".