231132199 has 4 divisors (see below), whose sum is σ = 233729280. Its totient is φ = 228535120.

The previous prime is 231132197. The next prime is 231132203. The reversal of 231132199 is 991231132.

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 231132199 - 2¹ = 231132197 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 231132199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231132191) 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, 1298407 + ... + 1298584.

It is an arithmetic number, because the mean of its divisors is an integer number (58432320).

Almost surely, 2^231132199 is an apocalyptic number.

231132199 is a deficient number, since it is larger than the sum of its proper divisors (2597081).

231132199 is an equidigital number, since it uses as much as digits as its factorization.

231132199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2597080.

The product of its digits is 2916, while the sum is 31.

The square root of 231132199 is about 15203.0325593284. The cubic root of 231132199 is about 613.6962700754.

The spelling of 231132199 in words is "two hundred thirty-one million, one hundred thirty-two thousand, one hundred ninety-nine".