99311816239 has 2 divisors, whose sum is σ = 99311816240. Its totient is φ = 99311816238.

The previous prime is 99311816189. The next prime is 99311816251. The reversal of 99311816239 is 93261811399.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99311816239 - 2¹⁵ = 99311783471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99311816839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49655908119 + 49655908120.

It is an arithmetic number, because the mean of its divisors is an integer number (49655908120).

Almost surely, 2^99311816239 is an apocalyptic number.

99311816239 is a deficient number, since it is larger than the sum of its proper divisors (1).

99311816239 is an equidigital number, since it uses as much as digits as its factorization.

99311816239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 629856, while the sum is 52.

The spelling of 99311816239 in words is "ninety-nine billion, three hundred eleven million, eight hundred sixteen thousand, two hundred thirty-nine".