13431967 has 2 divisors, whose sum is σ = 13431968. Its totient is φ = 13431966.

The previous prime is 13431941. The next prime is 13431991. The reversal of 13431967 is 76913431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13431967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13431937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6715983 + 6715984.

It is an arithmetic number, because the mean of its divisors is an integer number (6715984).

Almost surely, 2^13431967 is an apocalyptic number.

13431967 is a deficient number, since it is larger than the sum of its proper divisors (1).

13431967 is an equidigital number, since it uses as much as digits as its factorization.

13431967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 34.

The square root of 13431967 is about 3664.9648020138. The cubic root of 13431967 is about 237.7095000937.

The spelling of 13431967 in words is "thirteen million, four hundred thirty-one thousand, nine hundred sixty-seven".