231138086 has 48 divisors (see below), whose sum is σ = 391311648. Its totient is φ = 102009600.

The previous prime is 231138049. The next prime is 231138101. The reversal of 231138086 is 680831132.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1276916 + ... + 1277096.

It is an arithmetic number, because the mean of its divisors is an integer number (8152326).

Almost surely, 2^231138086 is an apocalyptic number.

231138086 is a deficient number, since it is larger than the sum of its proper divisors (160173562).

231138086 is a wasteful number, since it uses less digits than its factorization.

231138086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 231138086 is about 15203.2261707836. The cubic root of 231138086 is about 613.7014803682.

The spelling of 231138086 in words is "two hundred thirty-one million, one hundred thirty-eight thousand, eighty-six".