31001222022113 has 32 divisors (see below), whose sum is σ = 36667485388800. Its totient is φ = 25659037008000.

The previous prime is 31001222022109. The next prime is 31001222022143. The reversal of 31001222022113 is 31122022210013.

It is a cyclic number.

It is not a de Polignac number, because 31001222022113 - 2² = 31001222022109 is a prime.

It is a super-2 number, since 2×31001222022113² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31001222022143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9487628 + ... + 12329538.

It is an arithmetic number, because the mean of its divisors is an integer number (1145858918400).

Almost surely, 2^{31001222022113} is an apocalyptic number.

It is an amenable number.

31001222022113 is a deficient number, since it is larger than the sum of its proper divisors (5666263366687).

31001222022113 is a wasteful number, since it uses less digits than its factorization.

31001222022113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842349.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31001222022113 its reverse (31122022210013), we get a palindrome (62123244232126).

The spelling of 31001222022113 in words is "thirty-one trillion, one billion, two hundred twenty-two million, twenty-two thousand, one hundred thirteen".