13617439231 has 16 divisors (see below), whose sum is σ = 15012781056. Its totient is φ = 12248500000.

The previous prime is 13617439217. The next prime is 13617439243. The reversal of 13617439231 is 13293471631.

It is not a de Polignac number, because 13617439231 - 2⁷ = 13617439103 is a prime.

It is a super-2 number, since 2×13617439231² (a number of 21 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 (13617439261) 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, 2075406 + ... + 2081956.

It is an arithmetic number, because the mean of its divisors is an integer number (938298816).

Almost surely, 2^13617439231 is an apocalyptic number.

13617439231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13617439231 is a deficient number, since it is larger than the sum of its proper divisors (1395341825).

13617439231 is a wasteful number, since it uses less digits than its factorization.

13617439231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8534.

The product of its digits is 81648, while the sum is 40.

The spelling of 13617439231 in words is "thirteen billion, six hundred seventeen million, four hundred thirty-nine thousand, two hundred thirty-one".