232131144 has 64 divisors (see below), whose sum is σ = 664381440. Its totient is φ = 66208320.

The previous prime is 232131101. The next prime is 232131161. The reversal of 232131144 is 441131232.

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

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 232131144.

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, 162417 + ... + 163839.

It is an arithmetic number, because the mean of its divisors is an integer number (10380960).

Almost surely, 2^232131144 is an apocalyptic number.

232131144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

232131144 is an abundant number, since it is smaller than the sum of its proper divisors (432250296).

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

232131144 is a wasteful number, since it uses less digits than its factorization.

232131144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410 (or 2406 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 232131144 is about 15235.8506162275. The cubic root of 232131144 is about 614.5791237642.

Adding to 232131144 its reverse (441131232), we get a palindrome (673262376).

The spelling of 232131144 in words is "two hundred thirty-two million, one hundred thirty-one thousand, one hundred forty-four".