31368431512 has 16 divisors (see below), whose sum is σ = 64162701000. Its totient is φ = 14258377920.

The previous prime is 31368431483. The next prime is 31368431519. The reversal of 31368431512 is 21513486313.

It is a super-2 number, since 2×31368431512² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31368431519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178229637 + ... + 178229812.

Almost surely, 2^31368431512 is an apocalyptic number.

It is an amenable number.

31368431512 is an abundant number, since it is smaller than the sum of its proper divisors (32794269488).

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

31368431512 is a wasteful number, since it uses less digits than its factorization.

31368431512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356459466 (or 356459462 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The spelling of 31368431512 in words is "thirty-one billion, three hundred sixty-eight million, four hundred thirty-one thousand, five hundred twelve".