231624413 has 4 divisors (see below), whose sum is σ = 236552640. Its totient is φ = 226696188.

The previous prime is 231624397. The next prime is 231624431. The reversal of 231624413 is 314426132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231624413 - 2⁴ = 231624397 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 (231624313) 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, 2464043 + ... + 2464136.

It is an arithmetic number, because the mean of its divisors is an integer number (59138160).

Almost surely, 2^231624413 is an apocalyptic number.

It is an amenable number.

231624413 is a deficient number, since it is larger than the sum of its proper divisors (4928227).

231624413 is an equidigital number, since it uses as much as digits as its factorization.

231624413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4928226.

The product of its digits is 3456, while the sum is 26.

The square root of 231624413 is about 15219.2119704011. The cubic root of 231624413 is about 614.1315991835.

The spelling of 231624413 in words is "two hundred thirty-one million, six hundred twenty-four thousand, four hundred thirteen".