31031022211013 has 16 divisors (see below), whose sum is σ = 34357645045824. Its totient is φ = 27788678501760.

The previous prime is 31031022210971. The next prime is 31031022211027. The reversal of 31031022211013 is 31011222013013.

It is a happy number.

It is not a de Polignac number, because 31031022211013 - 2⁶ = 31031022210949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31031022216013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97949081 + ... + 98265377.

It is an arithmetic number, because the mean of its divisors is an integer number (2147352815364).

Almost surely, 2^{31031022211013} is an apocalyptic number.

It is an amenable number.

31031022211013 is a deficient number, since it is larger than the sum of its proper divisors (3326622834811).

31031022211013 is a wasteful number, since it uses less digits than its factorization.

31031022211013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449492.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31031022211013 its reverse (31011222013013), we get a palindrome (62042244224026).

The spelling of 31031022211013 in words is "thirty-one trillion, thirty-one billion, twenty-two million, two hundred eleven thousand, thirteen".