231408507 has 12 divisors (see below), whose sum is σ = 339144680. Its totient is φ = 140247360.

The previous prime is 231408491. The next prime is 231408517. The reversal of 231408507 is 705804132.

It is not a de Polignac number, because 231408507 - 2⁴ = 231408491 is a prime.

It is a super-2 number, since 2×231408507² = 107099794223938098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231408517) 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, 318382 + ... + 319107.

Almost surely, 2^231408507 is an apocalyptic number.

231408507 is a deficient number, since it is larger than the sum of its proper divisors (107736173).

231408507 is a wasteful number, since it uses less digits than its factorization.

231408507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637514 (or 637503 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 231408507 is about 15212.1171110401. The cubic root of 231408507 is about 613.9407213229.

The spelling of 231408507 in words is "two hundred thirty-one million, four hundred eight thousand, five hundred seven".