13827731 has 2 divisors, whose sum is σ = 13827732. Its totient is φ = 13827730.

The previous prime is 13827721. The next prime is 13827743. The reversal of 13827731 is 13772831.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13827731 is a prime.

It is a super-2 number, since 2×13827731² = 382412289216722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13827721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6913865 + 6913866.

It is an arithmetic number, because the mean of its divisors is an integer number (6913866).

Almost surely, 2^13827731 is an apocalyptic number.

13827731 is a deficient number, since it is larger than the sum of its proper divisors (1).

13827731 is an equidigital number, since it uses as much as digits as its factorization.

13827731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 32.

The square root of 13827731 is about 3718.5657181231. The cubic root of 13827731 is about 240.0215894930.

The spelling of 13827731 in words is "thirteen million, eight hundred twenty-seven thousand, seven hundred thirty-one".