31310021031132 has 24 divisors (see below), whose sum is σ = 73063070476816. Its totient is φ = 10435765857408.

The previous prime is 31310021031109. The next prime is 31310021031227. The reversal of 31310021031132 is 23113012001313.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31310021031099 and 31310021031108.

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, 113333743 + ... + 113609670.

Almost surely, 2^{31310021031132} is an apocalyptic number.

It is an amenable number.

31310021031132 is an abundant number, since it is smaller than the sum of its proper divisors (41753049445684).

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

31310021031132 is a wasteful number, since it uses less digits than its factorization.

31310021031132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226954917 (or 226954915 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31310021031132 its reverse (23113012001313), we get a palindrome (54423033032445).

The spelling of 31310021031132 in words is "thirty-one trillion, three hundred ten billion, twenty-one million, thirty-one thousand, one hundred thirty-two".