231864746 has 4 divisors (see below), whose sum is σ = 347797122. Its totient is φ = 115932372.

The previous prime is 231864739. The next prime is 231864761. The reversal of 231864746 is 647468132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 145467721 + 86397025 = 12061^2 + 9295^2 .

It is a super-2 number, since 2×231864746² = 107522520875289032, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57966185 + ... + 57966188.

Almost surely, 2^231864746 is an apocalyptic number.

231864746 is a deficient number, since it is larger than the sum of its proper divisors (115932376).

231864746 is a wasteful number, since it uses less digits than its factorization.

231864746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115932375.

The product of its digits is 193536, while the sum is 41.

The square root of 231864746 is about 15227.1056343614. The cubic root of 231864746 is about 614.3439329766.

The spelling of 231864746 in words is "two hundred thirty-one million, eight hundred sixty-four thousand, seven hundred forty-six".