31265323117 has 4 divisors (see below), whose sum is σ = 35731797856. Its totient is φ = 26798848380.

The previous prime is 31265323109. The next prime is 31265323147. The reversal of 31265323117 is 71132356213.

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, and also an emirpimes, since its reverse is a distinct semiprime: 71132356213 = 119771 ⋅593903.

It is a cyclic number.

It is not a de Polignac number, because 31265323117 - 2³ = 31265323109 is a prime.

It is a super-2 number, since 2×31265323117² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31265323147) 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, 2233237359 + ... + 2233237372.

It is an arithmetic number, because the mean of its divisors is an integer number (8932949464).

Almost surely, 2^31265323117 is an apocalyptic number.

It is an amenable number.

31265323117 is a deficient number, since it is larger than the sum of its proper divisors (4466474739).

31265323117 is an equidigital number, since it uses as much as digits as its factorization.

31265323117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4466474738.

The product of its digits is 22680, while the sum is 34.

The spelling of 31265323117 in words is "thirty-one billion, two hundred sixty-five million, three hundred twenty-three thousand, one hundred seventeen".