268155731 has 2 divisors, whose sum is σ = 268155732. Its totient is φ = 268155730.

The previous prime is 268155691. The next prime is 268155737. The reversal of 268155731 is 137551862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268155731 - 2¹⁰ = 268154707 is a prime.

It is a super-2 number, since 2×268155731² = 143814992136288722, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (268155737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134077865 + 134077866.

It is an arithmetic number, because the mean of its divisors is an integer number (134077866).

Almost surely, 2^268155731 is an apocalyptic number.

268155731 is a deficient number, since it is larger than the sum of its proper divisors (1).

268155731 is an equidigital number, since it uses as much as digits as its factorization.

268155731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 38.

The square root of 268155731 is about 16375.4612454123. The cubic root of 268155731 is about 644.8554298103.

The spelling of 268155731 in words is "two hundred sixty-eight million, one hundred fifty-five thousand, seven hundred thirty-one".