13089731 has 2 divisors, whose sum is σ = 13089732. Its totient is φ = 13089730.

The previous prime is 13089709. The next prime is 13089743. The reversal of 13089731 is 13798031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13089731 - 2⁶ = 13089667 is a prime.

It is a super-2 number, since 2×13089731² = 342682115304722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13089751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6544865 + 6544866.

It is an arithmetic number, because the mean of its divisors is an integer number (6544866).

Almost surely, 2^13089731 is an apocalyptic number.

13089731 is a deficient number, since it is larger than the sum of its proper divisors (1).

13089731 is an equidigital number, since it uses as much as digits as its factorization.

13089731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 13089731 is about 3617.9733277071. The cubic root of 13089731 is about 235.6732226865.

The spelling of 13089731 in words is "thirteen million, eighty-nine thousand, seven hundred thirty-one".