231519040899 has 4 divisors (see below), whose sum is σ = 308692054536. Its totient is φ = 154346027264.

The previous prime is 231519040897. The next prime is 231519040931. The reversal of 231519040899 is 998040915132.

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 231519040899 - 2¹ = 231519040897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231519040897) 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, 38586506814 + ... + 38586506819.

It is an arithmetic number, because the mean of its divisors is an integer number (77173013634).

Almost surely, 2^231519040899 is an apocalyptic number.

231519040899 is a deficient number, since it is larger than the sum of its proper divisors (77173013637).

231519040899 is an equidigital number, since it uses as much as digits as its factorization.

231519040899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77173013636.

The product of its (nonzero) digits is 699840, while the sum is 51.

The spelling of 231519040899 in words is "two hundred thirty-one billion, five hundred nineteen million, forty thousand, eight hundred ninety-nine".