231320299 has 4 divisors (see below), whose sum is σ = 264366064. Its totient is φ = 198274536.

The previous prime is 231320273. The next prime is 231320311. The reversal of 231320299 is 992023132.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 231320299 - 2⁵ = 231320267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231320299.

It is not an unprimeable number, because it can be changed into a prime (231320099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16522872 + ... + 16522885.

It is an arithmetic number, because the mean of its divisors is an integer number (66091516).

Almost surely, 2^231320299 is an apocalyptic number.

231320299 is a deficient number, since it is larger than the sum of its proper divisors (33045765).

231320299 is an equidigital number, since it uses as much as digits as its factorization.

231320299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33045764.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 231320299 is about 15209.2175669888. The cubic root of 231320299 is about 613.8627043618.

The spelling of 231320299 in words is "two hundred thirty-one million, three hundred twenty thousand, two hundred ninety-nine".