931381939995 has 64 divisors (see below), whose sum is σ = 1714522145280. Its totient is φ = 427909920768.

The previous prime is 931381939993. The next prime is 931381940029. The reversal of 931381939995 is 599939183139.

It is not a de Polignac number, because 931381939995 - 2¹ = 931381939993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (931381939993) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1627774 + ... + 2124243.

It is an arithmetic number, because the mean of its divisors is an integer number (26789408520).

Almost surely, 2^931381939995 is an apocalyptic number.

931381939995 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

931381939995 is a deficient number, since it is larger than the sum of its proper divisors (783140205285).

931381939995 is a wasteful number, since it uses less digits than its factorization.

931381939995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752124.

The product of its digits is 63772920, while the sum is 69.

The spelling of 931381939995 in words is "nine hundred thirty-one billion, three hundred eighty-one million, nine hundred thirty-nine thousand, nine hundred ninety-five".