13385731 has 2 divisors, whose sum is σ = 13385732. Its totient is φ = 13385730.

The previous prime is 13385699. The next prime is 13385759. The reversal of 13385731 is 13758331.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (13758331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13385731 - 2⁵ = 13385699 is a prime.

It is a super-2 number, since 2×13385731² = 358355588808722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13385693 and 13385702.

It is not a weakly prime, because it can be changed into another prime (13385761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6692865 + 6692866.

It is an arithmetic number, because the mean of its divisors is an integer number (6692866).

Almost surely, 2^13385731 is an apocalyptic number.

13385731 is a deficient number, since it is larger than the sum of its proper divisors (1).

13385731 is an equidigital number, since it uses as much as digits as its factorization.

13385731 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 13385731 is about 3658.6515275440. The cubic root of 13385731 is about 237.4364358055.

The spelling of 13385731 in words is "thirteen million, three hundred eighty-five thousand, seven hundred thirty-one".