31122313113020 has 24 divisors (see below), whose sum is σ = 65359110655104. Its totient is φ = 12448496079936.

The previous prime is 31122313112963. The next prime is 31122313113041. The reversal of 31122313113020 is 2031131322113.

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, 26227859 + ... + 27388778.

It is an arithmetic number, because the mean of its divisors is an integer number (2723296277296).

Almost surely, 2^{31122313113020} is an apocalyptic number.

It is an amenable number.

31122313113020 is an abundant number, since it is smaller than the sum of its proper divisors (34236797542084).

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

31122313113020 is a wasteful number, since it uses less digits than its factorization.

31122313113020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53645669 (or 53645667 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31122313113020 its reverse (2031131322113), we get a palindrome (33153444435133).

The spelling of 31122313113020 in words is "thirty-one trillion, one hundred twenty-two billion, three hundred thirteen million, one hundred thirteen thousand, twenty".