231123199 has 4 divisors (see below), whose sum is σ = 231638400. Its totient is φ = 230608000.

The previous prime is 231123187. The next prime is 231123203. The reversal of 231123199 is 991321132.

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 231123199 - 2⁹ = 231122687 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 231123199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231123149) 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, 256927 + ... + 257824.

It is an arithmetic number, because the mean of its divisors is an integer number (57909600).

Almost surely, 2^231123199 is an apocalyptic number.

231123199 is a deficient number, since it is larger than the sum of its proper divisors (515201).

231123199 is an equidigital number, since it uses as much as digits as its factorization.

231123199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515200.

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

The square root of 231123199 is about 15202.7365628692. The cubic root of 231123199 is about 613.6883044492.

The spelling of 231123199 in words is "two hundred thirty-one million, one hundred twenty-three thousand, one hundred ninety-nine".