31261421604113 has 4 divisors (see below), whose sum is σ = 31274387770608. Its totient is φ = 31248455437620.

The previous prime is 31261421604071. The next prime is 31261421604151. The reversal of 31261421604113 is 31140612416213.

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 31261421604113 - 2¹⁴ = 31261421587729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31261421604613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6483079631 + ... + 6483084452.

It is an arithmetic number, because the mean of its divisors is an integer number (7818596942652).

Almost surely, 2^{31261421604113} is an apocalyptic number.

It is an amenable number.

31261421604113 is a deficient number, since it is larger than the sum of its proper divisors (12966166495).

31261421604113 is a wasteful number, since it uses less digits than its factorization.

31261421604113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12966166494.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 31261421604113 in words is "thirty-one trillion, two hundred sixty-one billion, four hundred twenty-one million, six hundred four thousand, one hundred thirteen".