31202012112020 has 48 divisors (see below), whose sum is σ = 65707451183808. Its totient is φ = 12445923494400.

The previous prime is 31202012112001. The next prime is 31202012112041. The reversal of 31202012112020 is 2021121020213.

It is a self number, because there is not a number n which added to its sum of digits gives 31202012112020.

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, 26065067 + ... + 27235853.

It is an arithmetic number, because the mean of its divisors is an integer number (1368905232996).

Almost surely, 2^{31202012112020} is an apocalyptic number.

It is an amenable number.

31202012112020 is an abundant number, since it is smaller than the sum of its proper divisors (34505439071788).

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

31202012112020 is a wasteful number, since it uses less digits than its factorization.

31202012112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174520 (or 1174518 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 31202012112020 its reverse (2021121020213), we get a palindrome (33223133132233).

The spelling of 31202012112020 in words is "thirty-one trillion, two hundred two billion, twelve million, one hundred twelve thousand, twenty".