231475199 has 2 divisors, whose sum is σ = 231475200. Its totient is φ = 231475198.

The previous prime is 231475177. The next prime is 231475241. The reversal of 231475199 is 991574132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231475199 - 2¹⁶ = 231409663 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231475169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115737599 + 115737600.

It is an arithmetic number, because the mean of its divisors is an integer number (115737600).

Almost surely, 2^231475199 is an apocalyptic number.

231475199 is a deficient number, since it is larger than the sum of its proper divisors (1).

231475199 is an equidigital number, since it uses as much as digits as its factorization.

231475199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 41.

The square root of 231475199 is about 15214.3090214443. The cubic root of 231475199 is about 613.9996949568. Note that the first 3 decimals are identical.

The spelling of 231475199 in words is "two hundred thirty-one million, four hundred seventy-five thousand, one hundred ninety-nine".