232531431 has 8 divisors (see below), whose sum is σ = 338227584. Its totient is φ = 140928120.

The previous prime is 232531427. The next prime is 232531433. The reversal of 232531431 is 134135232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 232531431 - 2² = 232531427 is a prime.

It is a super-2 number, since 2×232531431² = 108141732805815522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232531433) 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 7 ways as a sum of consecutive naturals, for example, 3523171 + ... + 3523236.

It is an arithmetic number, because the mean of its divisors is an integer number (42278448).

Almost surely, 2^232531431 is an apocalyptic number.

232531431 is a deficient number, since it is larger than the sum of its proper divisors (105696153).

232531431 is a wasteful number, since it uses less digits than its factorization.

232531431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7046421.

The product of its digits is 2160, while the sum is 24.

The square root of 232531431 is about 15248.9813102384. The cubic root of 232531431 is about 614.9321810337.

Adding to 232531431 its reverse (134135232), we get a palindrome (366666663).

The spelling of 232531431 in words is "two hundred thirty-two million, five hundred thirty-one thousand, four hundred thirty-one".