13313857 has 2 divisors, whose sum is σ = 13313858. Its totient is φ = 13313856.

The previous prime is 13313843. The next prime is 13313863. The reversal of 13313857 is 75831331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10653696 + 2660161 = 3264^2 + 1631^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13313857 is a prime.

It is not a weakly prime, because it can be changed into another prime (13313827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6656928 + 6656929.

It is an arithmetic number, because the mean of its divisors is an integer number (6656929).

Almost surely, 2^13313857 is an apocalyptic number.

It is an amenable number.

13313857 is a deficient number, since it is larger than the sum of its proper divisors (1).

13313857 is an equidigital number, since it uses as much as digits as its factorization.

13313857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 13313857 is about 3648.8158353088. The cubic root of 13313857 is about 237.0107053031.

The spelling of 13313857 in words is "thirteen million, three hundred thirteen thousand, eight hundred fifty-seven".