31313023032 has 32 divisors (see below), whose sum is σ = 81686148480. Its totient is φ = 9983862240.

The previous prime is 31313023013. The next prime is 31313023097. The reversal of 31313023032 is 23032031313.

It is a super-2 number, since 2×31313023032² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28362694 + ... + 28363797.

It is an arithmetic number, because the mean of its divisors is an integer number (2552692140).

Almost surely, 2^31313023032 is an apocalyptic number.

It is an amenable number.

31313023032 is an abundant number, since it is smaller than the sum of its proper divisors (50373125448).

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

31313023032 is a wasteful number, since it uses less digits than its factorization.

31313023032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56726523 (or 56726519 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31313023032 its reverse (23032031313), we get a palindrome (54345054345).

The spelling of 31313023032 in words is "thirty-one billion, three hundred thirteen million, twenty-three thousand, thirty-two".