13613951231 has 16 divisors (see below), whose sum is σ = 15021431040. Its totient is φ = 12290201280.

The previous prime is 13613951201. The next prime is 13613951251. The reversal of 13613951231 is 13215931631.

It is a cyclic number.

It is not a de Polignac number, because 13613951231 - 2¹⁴ = 13613934847 is a prime.

It is a super-2 number, since 2×13613951231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13613951191 and 13613951200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13613951201) 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, 169715 + ... + 236708.

It is an arithmetic number, because the mean of its divisors is an integer number (938839440).

Almost surely, 2^13613951231 is an apocalyptic number.

13613951231 is a deficient number, since it is larger than the sum of its proper divisors (1407479809).

13613951231 is a wasteful number, since it uses less digits than its factorization.

13613951231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406526.

The product of its digits is 14580, while the sum is 35.

The spelling of 13613951231 in words is "thirteen billion, six hundred thirteen million, nine hundred fifty-one thousand, two hundred thirty-one".