268451931 has 24 divisors (see below), whose sum is σ = 414151360. Its totient is φ = 154131120.

The previous prime is 268451903. The next prime is 268451933. The reversal of 268451931 is 139154862.

It is not a de Polignac number, because 268451931 - 2⁵ = 268451899 is a prime.

It is a super-2 number, since 2×268451931² = 144132878515257522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 268451931.

It is not an unprimeable number, because it can be changed into a prime (268451933) 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 in 23 ways as a sum of consecutive naturals, for example, 12565 + ... + 26358.

Almost surely, 2^268451931 is an apocalyptic number.

268451931 is a deficient number, since it is larger than the sum of its proper divisors (145699429).

268451931 is a wasteful number, since it uses less digits than its factorization.

268451931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38967 (or 38956 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 268451931 is about 16384.5027693855. The cubic root of 268451931 is about 645.0927743481.

It can be divided in two parts, 2684 and 51931, that added together give a triangular number (54615 = T₃₃₀).

The spelling of 268451931 in words is "two hundred sixty-eight million, four hundred fifty-one thousand, nine hundred thirty-one".