31021322312013 has 16 divisors (see below), whose sum is σ = 45141198111552. Its totient is φ = 18792770256000.

The previous prime is 31021322312011. The next prime is 31021322312059.

31021322312013 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31021322312013 - 2¹ = 31021322312011 is a prime.

It is a super-2 number, since 2×31021322312013² (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 (31021322312011) 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, 200700208 + ... + 200854713.

It is an arithmetic number, because the mean of its divisors is an integer number (2821324881972).

Almost surely, 2^{31021322312013} is an apocalyptic number.

31021322312013 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31021322312013 is a deficient number, since it is larger than the sum of its proper divisors (14119875799539).

31021322312013 is a wasteful number, since it uses less digits than its factorization.

31021322312013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401557276.

The product of its (nonzero) digits is 1296, while the sum is 24.

It can be divided in two parts, 3102132 and 2312013, that added together give a palindrome (5414145).

The spelling of 31021322312013 in words is "thirty-one trillion, twenty-one billion, three hundred twenty-two million, three hundred twelve thousand, thirteen".