13797731 has 2 divisors, whose sum is σ = 13797732. Its totient is φ = 13797730.

The previous prime is 13797701. The next prime is 13797739. The reversal of 13797731 is 13779731.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13797731 is a prime.

It is a super-2 number, since 2×13797731² = 380754761496722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13797739) 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, 6898865 + 6898866.

It is an arithmetic number, because the mean of its divisors is an integer number (6898866).

Almost surely, 2^13797731 is an apocalyptic number.

13797731 is a deficient number, since it is larger than the sum of its proper divisors (1).

13797731 is an equidigital number, since it uses as much as digits as its factorization.

13797731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27783, while the sum is 38.

The square root of 13797731 is about 3714.5297145130. The cubic root of 13797731 is about 239.8478839307.

The spelling of 13797731 in words is "thirteen million, seven hundred ninety-seven thousand, seven hundred thirty-one".