231432413 has 4 divisors (see below), whose sum is σ = 237077148. Its totient is φ = 225787680.

The previous prime is 231432401. The next prime is 231432419. The reversal of 231432413 is 314234132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 92121604 + 139310809 = 9598^2 + 11803^2 .

It is a cyclic number.

It is not a de Polignac number, because 231432413 - 2¹² = 231428317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231432419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2822306 + ... + 2822387.

It is an arithmetic number, because the mean of its divisors is an integer number (59269287).

Almost surely, 2^231432413 is an apocalyptic number.

It is an amenable number.

231432413 is a deficient number, since it is larger than the sum of its proper divisors (5644735).

231432413 is an equidigital number, since it uses as much as digits as its factorization.

231432413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5644734.

The product of its digits is 1728, while the sum is 23.

The square root of 231432413 is about 15212.9028459397. The cubic root of 231432413 is about 613.9618619480.

Adding to 231432413 its reverse (314234132), we get a palindrome (545666545).

The spelling of 231432413 in words is "two hundred thirty-one million, four hundred thirty-two thousand, four hundred thirteen".