231790099 has 4 divisors (see below), whose sum is σ = 232692264. Its totient is φ = 230887936.

The previous prime is 231790049. The next prime is 231790109. The reversal of 231790099 is 990097132.

231790099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 231790099 - 2⁹ = 231789587 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231790049) 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, 450697 + ... + 451210.

It is an arithmetic number, because the mean of its divisors is an integer number (58173066).

Almost surely, 2^231790099 is an apocalyptic number.

231790099 is a deficient number, since it is larger than the sum of its proper divisors (902165).

231790099 is an equidigital number, since it uses as much as digits as its factorization.

231790099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902164.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 231790099 is about 15224.6543146306. The cubic root of 231790099 is about 614.2779981956.

It can be divided in two parts, 2317 and 90099, that added together give a square (92416 = 304²).

The spelling of 231790099 in words is "two hundred thirty-one million, seven hundred ninety thousand, ninety-nine".