31322945269513 has 4 divisors (see below), whose sum is σ = 32684812455168. Its totient is φ = 29961078083860.

The previous prime is 31322945269463. The next prime is 31322945269537. The reversal of 31322945269513 is 31596254922313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31322945269513 - 2³³ = 31314355334921 is a prime.

It is a super-2 number, since 2×31322945269513² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31322945269573) 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 3 ways as a sum of consecutive naturals, for example, 680933592793 + ... + 680933592838.

It is an arithmetic number, because the mean of its divisors is an integer number (8171203113792).

Almost surely, 2^{31322945269513} is an apocalyptic number.

It is an amenable number.

31322945269513 is a deficient number, since it is larger than the sum of its proper divisors (1361867185655).

31322945269513 is a wasteful number, since it uses less digits than its factorization.

31322945269513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361867185654.

The product of its digits is 10497600, while the sum is 55.

The spelling of 31322945269513 in words is "thirty-one trillion, three hundred twenty-two billion, nine hundred forty-five million, two hundred sixty-nine thousand, five hundred thirteen".