231185607899 has 2 divisors, whose sum is σ = 231185607900. Its totient is φ = 231185607898.

The previous prime is 231185607691. The next prime is 231185607937. The reversal of 231185607899 is 998706581132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231185607899 - 2⁸ = 231185607643 is a prime.

It is not a weakly prime, because it can be changed into another prime (231185607299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115592803949 + 115592803950.

It is an arithmetic number, because the mean of its divisors is an integer number (115592803950).

Almost surely, 2^231185607899 is an apocalyptic number.

231185607899 is a deficient number, since it is larger than the sum of its proper divisors (1).

231185607899 is an equidigital number, since it uses as much as digits as its factorization.

231185607899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 59.

The spelling of 231185607899 in words is "two hundred thirty-one billion, one hundred eighty-five million, six hundred seven thousand, eight hundred ninety-nine".