231312299 has 4 divisors (see below), whose sum is σ = 235676736. Its totient is φ = 226947864.

The previous prime is 231312281. The next prime is 231312317. The reversal of 231312299 is 992213132.

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

It is an interprime number because it is at equal distance from previous prime (231312281) and next prime (231312317).

It is a cyclic number.

It is not a de Polignac number, because 231312299 - 2⁸ = 231312043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231312209) 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, 2182139 + ... + 2182244.

It is an arithmetic number, because the mean of its divisors is an integer number (58919184).

Almost surely, 2^231312299 is an apocalyptic number.

231312299 is a deficient number, since it is larger than the sum of its proper divisors (4364437).

231312299 is an equidigital number, since it uses as much as digits as its factorization.

231312299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4364436.

The product of its digits is 5832, while the sum is 32.

The square root of 231312299 is about 15208.9545663073. The cubic root of 231312299 is about 613.8556276543.

The spelling of 231312299 in words is "two hundred thirty-one million, three hundred twelve thousand, two hundred ninety-nine".