23691113391 has 16 divisors (see below), whose sum is σ = 34467436800. Its totient is φ = 14355069120.

The previous prime is 23691113371. The next prime is 23691113401. The reversal of 23691113391 is 19331119632.

It is not a de Polignac number, because 23691113391 - 2⁷ = 23691113263 is a prime.

It is a super-2 number, since 2×23691113391² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23691113371) 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, 76206 + ... + 230628.

It is an arithmetic number, because the mean of its divisors is an integer number (2154214800).

Almost surely, 2^23691113391 is an apocalyptic number.

23691113391 is a deficient number, since it is larger than the sum of its proper divisors (10776323409).

23691113391 is a wasteful number, since it uses less digits than its factorization.

23691113391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159086.

The product of its digits is 26244, while the sum is 39.

The spelling of 23691113391 in words is "twenty-three billion, six hundred ninety-one million, one hundred thirteen thousand, three hundred ninety-one".