231430713 has 4 divisors (see below), whose sum is σ = 308574288. Its totient is φ = 154287140.

The previous prime is 231430709. The next prime is 231430733. The reversal of 231430713 is 317034132.

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 231430713 - 2² = 231430709 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231430733) 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, 38571783 + ... + 38571788.

It is an arithmetic number, because the mean of its divisors is an integer number (77143572).

Almost surely, 2^231430713 is an apocalyptic number.

It is an amenable number.

231430713 is a deficient number, since it is larger than the sum of its proper divisors (77143575).

231430713 is an equidigital number, since it uses as much as digits as its factorization.

231430713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77143574.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 231430713 is about 15212.8469722140. The cubic root of 231430713 is about 613.9603586470.

Adding to 231430713 its reverse (317034132), we get a palindrome (548464845).

The spelling of 231430713 in words is "two hundred thirty-one million, four hundred thirty thousand, seven hundred thirteen".