231042831 has 32 divisors (see below), whose sum is σ = 335596800. Its totient is φ = 140901120.

The previous prime is 231042829. The next prime is 231042839. The reversal of 231042831 is 138240132.

It is not a de Polignac number, because 231042831 - 2¹ = 231042829 is a prime.

It is a super-2 number, since 2×231042831² = 106761579512989122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231042839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254280 + ... + 255186.

It is an arithmetic number, because the mean of its divisors is an integer number (10487400).

Almost surely, 2^231042831 is an apocalyptic number.

231042831 is a deficient number, since it is larger than the sum of its proper divisors (104553969).

231042831 is a wasteful number, since it uses less digits than its factorization.

231042831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 231042831 is about 15200.0931247147. The cubic root of 231042831 is about 613.6171640073.

Adding to 231042831 its reverse (138240132), we get a palindrome (369282963).

The spelling of 231042831 in words is "two hundred thirty-one million, forty-two thousand, eight hundred thirty-one".