13408831 has 2 divisors, whose sum is σ = 13408832. Its totient is φ = 13408830.

The previous prime is 13408799. The next prime is 13408867. The reversal of 13408831 is 13880431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13408831 - 2⁵ = 13408799 is a prime.

It is a super-2 number, since 2×13408831² = 359593497573122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13408831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13408891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6704415 + 6704416.

It is an arithmetic number, because the mean of its divisors is an integer number (6704416).

Almost surely, 2^13408831 is an apocalyptic number.

13408831 is a deficient number, since it is larger than the sum of its proper divisors (1).

13408831 is an equidigital number, since it uses as much as digits as its factorization.

13408831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 13408831 is about 3661.8070675556. The cubic root of 13408831 is about 237.5729401082.

The spelling of 13408831 in words is "thirteen million, four hundred eight thousand, eight hundred thirty-one".