31020323111320 has 32 divisors (see below), whose sum is σ = 69796350079920. Its totient is φ = 12408018474880.

The previous prime is 31020323111299. The next prime is 31020323111357. The reversal of 31020323111320 is 2311132302013.

It is a super-2 number, since 2×31020323111320² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31020323111291 and 31020323111300.

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, 1151034 + ... + 7960246.

Almost surely, 2^{31020323111320} is an apocalyptic number.

It is an amenable number.

31020323111320 is an abundant number, since it is smaller than the sum of its proper divisors (38776026968600).

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

31020323111320 is a wasteful number, since it uses less digits than its factorization.

31020323111320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6923115 (or 6923111 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31020323111320 its reverse (2311132302013), we get a palindrome (33331455413333).

The spelling of 31020323111320 in words is "thirty-one trillion, twenty billion, three hundred twenty-three million, one hundred eleven thousand, three hundred twenty".