31311113021022 has 8 divisors (see below), whose sum is σ = 62622226042056. Its totient is φ = 10437037673672.

The previous prime is 31311113021017. The next prime is 31311113021029. The reversal of 31311113021022 is 22012031111313.

It is a sphenic number, since it is the product of 3 distinct primes.

31311113021022 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 31311113021022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311113021029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2609259418413 + ... + 2609259418424.

It is an arithmetic number, because the mean of its divisors is an integer number (7827778255257).

Almost surely, 2^{31311113021022} is an apocalyptic number.

31311113021022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31311113021022 is a wasteful number, since it uses less digits than its factorization.

31311113021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5218518836842.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 31311113021022 its reverse (22012031111313), we get a palindrome (53323144132335).

The spelling of 31311113021022 in words is "thirty-one trillion, three hundred eleven billion, one hundred thirteen million, twenty-one thousand, twenty-two".