13309293931 has 4 divisors (see below), whose sum is σ = 14092193592. Its totient is φ = 12526394272.

The previous prime is 13309293929. The next prime is 13309293941. The reversal of 13309293931 is 13939290331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13309293931 - 2¹ = 13309293929 is a prime.

It is a super-2 number, since 2×13309293931² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13309293941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391449805 + ... + 391449838.

It is an arithmetic number, because the mean of its divisors is an integer number (3523048398).

Almost surely, 2^13309293931 is an apocalyptic number.

13309293931 is a deficient number, since it is larger than the sum of its proper divisors (782899661).

13309293931 is an equidigital number, since it uses as much as digits as its factorization.

13309293931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782899660.

The product of its (nonzero) digits is 118098, while the sum is 43.

The spelling of 13309293931 in words is "thirteen billion, three hundred nine million, two hundred ninety-three thousand, nine hundred thirty-one".