231622136 has 16 divisors (see below), whose sum is σ = 434895000. Its totient is φ = 115650144.

The previous prime is 231622099. The next prime is 231622163. The reversal of 231622136 is 631226132.

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, 13886 + ... + 25613.

Almost surely, 2^231622136 is an apocalyptic number.

It is an amenable number.

231622136 is a deficient number, since it is larger than the sum of its proper divisors (203272864).

231622136 is a wasteful number, since it uses less digits than its factorization.

231622136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40238 (or 40234 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 231622136 is about 15219.1371634531. The cubic root of 231622136 is about 614.1295867557.

Adding to 231622136 its reverse (631226132), we get a palindrome (862848268).

The spelling of 231622136 in words is "two hundred thirty-one million, six hundred twenty-two thousand, one hundred thirty-six".