231080899 has 4 divisors (see below), whose sum is σ = 264092464. Its totient is φ = 198069336.

The previous prime is 231080867. The next prime is 231080909. The reversal of 231080899 is 998080132.

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 231080899 - 2⁵ = 231080867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231080849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16505772 + ... + 16505785.

It is an arithmetic number, because the mean of its divisors is an integer number (66023116).

Almost surely, 2^231080899 is an apocalyptic number.

231080899 is a deficient number, since it is larger than the sum of its proper divisors (33011565).

231080899 is an equidigital number, since it uses as much as digits as its factorization.

231080899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33011564.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 231080899 is about 15201.3453023080. The cubic root of 231080899 is about 613.6508632357.

The spelling of 231080899 in words is "two hundred thirty-one million, eighty thousand, eight hundred ninety-nine".