232638131 has 4 divisors (see below), whose sum is σ = 253787064. Its totient is φ = 211489200.

The previous prime is 232638113. The next prime is 232638139. The reversal of 232638131 is 131836232.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232638131 is a prime.

It is a super-2 number, since 2×232638131² = 108240999990346322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 232638094 and 232638103.

It is not an unprimeable number, because it can be changed into a prime (232638139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10574450 + ... + 10574471.

It is an arithmetic number, because the mean of its divisors is an integer number (63446766).

Almost surely, 2^232638131 is an apocalyptic number.

232638131 is a deficient number, since it is larger than the sum of its proper divisors (21148933).

232638131 is a wasteful number, since it uses less digits than its factorization.

232638131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21148932.

The product of its digits is 5184, while the sum is 29.

The square root of 232638131 is about 15252.4795033463. The cubic root of 232638131 is about 615.0262231311.

The spelling of 232638131 in words is "two hundred thirty-two million, six hundred thirty-eight thousand, one hundred thirty-one".