231850138 has 16 divisors (see below), whose sum is σ = 375177600. Its totient is φ = 106821936.

The previous prime is 231850133. The next prime is 231850139. The reversal of 231850138 is 831058132.

It is not an unprimeable number, because it can be changed into a prime (231850133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8131 + ... + 23017.

It is an arithmetic number, because the mean of its divisors is an integer number (23448600).

Almost surely, 2^231850138 is an apocalyptic number.

231850138 is a deficient number, since it is larger than the sum of its proper divisors (143327462).

231850138 is a wasteful number, since it uses less digits than its factorization.

231850138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15501.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 231850138 is about 15226.6259558709. The cubic root of 231850138 is about 614.3310310229.

The spelling of 231850138 in words is "two hundred thirty-one million, eight hundred fifty thousand, one hundred thirty-eight".