231686132 has 12 divisors (see below), whose sum is σ = 429300900. Its totient is φ = 109028736.

The previous prime is 231686123. The next prime is 231686141.

231686132 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (231686123) and next prime (231686141).

It can be written as a sum of positive squares in 2 ways, for example, as 153611236 + 78074896 = 12394^2 + 8836^2 .

It is a super-2 number, since 2×231686132² = 107356927522242848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1703507 + ... + 1703642.

It is an arithmetic number, because the mean of its divisors is an integer number (35775075).

Almost surely, 2^231686132 is an apocalyptic number.

It is an amenable number.

231686132 is a deficient number, since it is larger than the sum of its proper divisors (197614768).

231686132 is a wasteful number, since it uses less digits than its factorization.

231686132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407170 (or 3407168 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 231686132 is about 15221.2395027475. The cubic root of 231686132 is about 614.1861418251.

The spelling of 231686132 in words is "two hundred thirty-one million, six hundred eighty-six thousand, one hundred thirty-two".