231457866 has 32 divisors (see below), whose sum is σ = 477089088. Its totient is φ = 74805120.

The previous prime is 231457843. The next prime is 231457879. The reversal of 231457866 is 668754132.

231457866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×231457866⁴ (a number of 35 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67821 + ... + 71151.

It is an arithmetic number, because the mean of its divisors is an integer number (14909034).

Almost surely, 2^231457866 is an apocalyptic number.

231457866 is an abundant number, since it is smaller than the sum of its proper divisors (245631222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231457866 is a wasteful number, since it uses less digits than its factorization.

231457866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686.

The product of its digits is 241920, while the sum is 42.

The square root of 231457866 is about 15213.7393825450. The cubic root of 231457866 is about 613.9843690207.

The spelling of 231457866 in words is "two hundred thirty-one million, four hundred fifty-seven thousand, eight hundred sixty-six".