13921412931 has 48 divisors (see below), whose sum is σ = 21449188800. Its totient is φ = 8700740352.

The previous prime is 13921412899. The next prime is 13921412963.

It is a happy number.

13921412931 is a `hidden beast` number, since 139 + 21 + 412 + 93 + 1 = 666.

13921412931 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (13921412899) and next prime (13921412963).

It is not a de Polignac number, because 13921412931 - 2⁵ = 13921412899 is a prime.

It is a super-2 number, since 2×13921412931² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13921412971) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15873465 + ... + 15874341.

It is an arithmetic number, because the mean of its divisors is an integer number (446858100).

Almost surely, 2^13921412931 is an apocalyptic number.

13921412931 is a deficient number, since it is larger than the sum of its proper divisors (7527775869).

13921412931 is an equidigital number, since it uses as much as digits as its factorization.

13921412931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293 (or 1256 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The spelling of 13921412931 in words is "thirteen billion, nine hundred twenty-one million, four hundred twelve thousand, nine hundred thirty-one".