31020022213012 has 48 divisors (see below), whose sum is σ = 62787048093952. Its totient is φ = 13134819202560.

The previous prime is 31020022212967. The next prime is 31020022213013. The reversal of 31020022213012 is 21031222002013.

It is a super-2 number, since 2×31020022213012² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020022213013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11171439 + ... + 13668982.

Almost surely, 2^{31020022213012} is an apocalyptic number.

It is an amenable number.

31020022213012 is an abundant number, since it is smaller than the sum of its proper divisors (31767025880940).

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

31020022213012 is a wasteful number, since it uses less digits than its factorization.

31020022213012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24840968 (or 24840966 counting only the distinct ones).

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

Adding to 31020022213012 its reverse (21031222002013), we get a palindrome (52051244215025).

The spelling of 31020022213012 in words is "thirty-one trillion, twenty billion, twenty-two million, two hundred thirteen thousand, twelve".