31302311212120 has 64 divisors (see below), whose sum is σ = 75879900764640. Its totient is φ = 11552901350400.

The previous prime is 31302311212061. The next prime is 31302311212153. The reversal of 31302311212120 is 2121211320313.

It is a junction number, because it is equal to n+sod(n) for n = 31302311212091 and 31302311212100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11461461 + ... + 13927300.

Almost surely, 2^{31302311212120} is an apocalyptic number.

It is an amenable number.

31302311212120 is an abundant number, since it is smaller than the sum of its proper divisors (44577589552520).

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

31302311212120 is a wasteful number, since it uses less digits than its factorization.

31302311212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25391156 (or 25391152 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31302311212120 its reverse (2121211320313), we get a palindrome (33423522532433).

The spelling of 31302311212120 in words is "thirty-one trillion, three hundred two billion, three hundred eleven million, two hundred twelve thousand, one hundred twenty".