163231793931 has 16 divisors (see below), whose sum is σ = 229199846400. Its totient is φ = 103047598368.

The previous prime is 163231793911. The next prime is 163231793951. The reversal of 163231793931 is 139397132361.

It is an interprime number because it is at equal distance from previous prime (163231793911) and next prime (163231793951).

It is not a de Polignac number, because 163231793931 - 2⁵ = 163231793899 is a prime.

It is a super-2 number, since 2×163231793931² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163231793911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512571 + ... + 767588.

It is an arithmetic number, because the mean of its divisors is an integer number (14324990400).

Almost surely, 2^163231793931 is an apocalyptic number.

163231793931 is a deficient number, since it is larger than the sum of its proper divisors (65968052469).

163231793931 is a wasteful number, since it uses less digits than its factorization.

163231793931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282418.

The product of its digits is 551124, while the sum is 48.

The spelling of 163231793931 in words is "one hundred sixty-three billion, two hundred thirty-one million, seven hundred ninety-three thousand, nine hundred thirty-one".