232431213 has 16 divisors (see below), whose sum is σ = 356733440. Its totient is φ = 131860656.

The previous prime is 232431181. The next prime is 232431217. The reversal of 232431213 is 312134232.

It is not a de Polignac number, because 232431213 - 2⁵ = 232431181 is a prime.

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 232431213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232431217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36895 + ... + 42732.

It is an arithmetic number, because the mean of its divisors is an integer number (22295840).

Almost surely, 2^232431213 is an apocalyptic number.

It is an amenable number.

232431213 is a deficient number, since it is larger than the sum of its proper divisors (124302227).

232431213 is a wasteful number, since it uses less digits than its factorization.

232431213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79776.

The product of its digits is 864, while the sum is 21.

The square root of 232431213 is about 15245.6949005285. The cubic root of 232431213 is about 614.8438257682.

Adding to 232431213 its reverse (312134232), we get a palindrome (544565445).

The spelling of 232431213 in words is "two hundred thirty-two million, four hundred thirty-one thousand, two hundred thirteen".