231142044 has 48 divisors (see below), whose sum is σ = 617476608. Its totient is φ = 65923008.

The previous prime is 231142039. The next prime is 231142091. The reversal of 231142044 is 440241132.

231142044 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 231142044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52222 + ... + 56474.

It is an arithmetic number, because the mean of its divisors is an integer number (12864096).

Almost surely, 2^231142044 is an apocalyptic number.

It is an amenable number.

231142044 is an abundant number, since it is smaller than the sum of its proper divisors (386334564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231142044 is a wasteful number, since it uses less digits than its factorization.

231142044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4914 (or 4912 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 231142044 is about 15203.3563399665. The cubic root of 231142044 is about 613.7049833487.

Adding to 231142044 its reverse (440241132), we get a palindrome (671383176).

The spelling of 231142044 in words is "two hundred thirty-one million, one hundred forty-two thousand, forty-four".