232431 has 4 divisors (see below), whose sum is σ = 309912. Its totient is φ = 154952.

The previous prime is 232417. The next prime is 232433. The reversal of 232431 is 134232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 232431 - 2⁶ = 232367 is a prime.

It is a super-2 number, since 2×232431² = 108048339522, which contains 22 as substring.

It is a D-number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 232431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38736 + ... + 38741.

It is an arithmetic number, because the mean of its divisors is an integer number (77478).

2²³²⁴³¹ is an apocalyptic number.

232431 is a deficient number, since it is larger than the sum of its proper divisors (77481).

232431 is an equidigital number, since it uses as much as digits as its factorization.

232431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77480.

The product of its digits is 144, while the sum is 15.

The square root of 232431 is about 482.1109830734. The cubic root of 232431 is about 61.4843637954.

Adding to 232431 its reverse (134232), we get a palindrome (366663).

The spelling of 232431 in words is "two hundred thirty-two thousand, four hundred thirty-one".