231523199 has 2 divisors, whose sum is σ = 231523200. Its totient is φ = 231523198.

The previous prime is 231523147. The next prime is 231523207. The reversal of 231523199 is 991325132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231523199 - 2¹⁶ = 231457663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231520199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115761599 + 115761600.

It is an arithmetic number, because the mean of its divisors is an integer number (115761600).

Almost surely, 2^231523199 is an apocalyptic number.

231523199 is a deficient number, since it is larger than the sum of its proper divisors (1).

231523199 is an equidigital number, since it uses as much as digits as its factorization.

231523199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14580, while the sum is 35.

The square root of 231523199 is about 15215.8864020470. The cubic root of 231523199 is about 614.0421328343.

The spelling of 231523199 in words is "two hundred thirty-one million, five hundred twenty-three thousand, one hundred ninety-nine".