13456931 has 2 divisors, whose sum is σ = 13456932. Its totient is φ = 13456930.

The previous prime is 13456903. The next prime is 13456943. The reversal of 13456931 is 13965431.

13456931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (13965431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13456931 - 2⁶ = 13456867 is a prime.

It is a super-2 number, since 2×13456931² = 362177983877522, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (13456901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6728465 + 6728466.

It is an arithmetic number, because the mean of its divisors is an integer number (6728466).

Almost surely, 2^13456931 is an apocalyptic number.

13456931 is a deficient number, since it is larger than the sum of its proper divisors (1).

13456931 is an equidigital number, since it uses as much as digits as its factorization.

13456931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 32.

The square root of 13456931 is about 3668.3689836220. The cubic root of 13456931 is about 237.8566740562.

The spelling of 13456931 in words is "thirteen million, four hundred fifty-six thousand, nine hundred thirty-one".