268747931 has 2 divisors, whose sum is σ = 268747932. Its totient is φ = 268747930.

The previous prime is 268747889. The next prime is 268747981. The reversal of 268747931 is 139747862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 268747931 - 2⁶ = 268747867 is a prime.

It is a super-2 number, since 2×268747931² = 144450900833561522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (268747981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134373965 + 134373966.

It is an arithmetic number, because the mean of its divisors is an integer number (134373966).

Almost surely, 2^268747931 is an apocalyptic number.

268747931 is a deficient number, since it is larger than the sum of its proper divisors (1).

268747931 is an equidigital number, since it uses as much as digits as its factorization.

268747931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 47.

The square root of 268747931 is about 16393.5332067251. The cubic root of 268747931 is about 645.3297842822.

The spelling of 268747931 in words is "two hundred sixty-eight million, seven hundred forty-seven thousand, nine hundred thirty-one".