231031042 has 16 divisors (see below), whose sum is σ = 378540864. Its totient is φ = 104878000.

The previous prime is 231031033. The next prime is 231031061. The reversal of 231031042 is 240130132.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11667 + ... + 24457.

It is an arithmetic number, because the mean of its divisors is an integer number (23658804).

Almost surely, 2^231031042 is an apocalyptic number.

231031042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231031042 is a deficient number, since it is larger than the sum of its proper divisors (147509822).

231031042 is a wasteful number, since it uses less digits than its factorization.

231031042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13625.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 231031042 is about 15199.7053260910. The cubic root of 231031042 is about 613.6067271895.

Adding to 231031042 its reverse (240130132), we get a palindrome (471161174).

The spelling of 231031042 in words is "two hundred thirty-one million, thirty-one thousand, forty-two".