31202102312020 has 96 divisors (see below), whose sum is σ = 71976706099200. Its totient is φ = 11310623723520.

The previous prime is 31202102311883. The next prime is 31202102312041. The reversal of 31202102312020 is 2021320120213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5340609 + ... + 9535528.

It is an arithmetic number, because the mean of its divisors is an integer number (749757355200).

Almost surely, 2^{31202102312020} is an apocalyptic number.

It is an amenable number.

31202102312020 is an abundant number, since it is smaller than the sum of its proper divisors (40774603787180).

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

31202102312020 is a wasteful number, since it uses less digits than its factorization.

31202102312020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14876393 (or 14876391 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31202102312020 its reverse (2021320120213), we get a palindrome (33223422432233).

The spelling of 31202102312020 in words is "thirty-one trillion, two hundred two billion, one hundred two million, three hundred twelve thousand, twenty".