268507431 has 12 divisors (see below), whose sum is σ = 388013808. Its totient is φ = 178926624.

The previous prime is 268507423. The next prime is 268507471. The reversal of 268507431 is 134705862.

It is not a de Polignac number, because 268507431 - 2³ = 268507423 is a prime.

It is a super-2 number, since 2×268507431² = 144192481004439522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268507471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21526 + ... + 31628.

It is an arithmetic number, because the mean of its divisors is an integer number (32334484).

Almost surely, 2^268507431 is an apocalyptic number.

268507431 is a deficient number, since it is larger than the sum of its proper divisors (119506377).

268507431 is a wasteful number, since it uses less digits than its factorization.

268507431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13062 (or 13059 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 268507431 is about 16386.1963554694. The cubic root of 268507431 is about 645.1372269767.

The spelling of 268507431 in words is "two hundred sixty-eight million, five hundred seven thousand, four hundred thirty-one".