99311913 has 12 divisors (see below), whose sum is σ = 148763888. Its totient is φ = 66207780.

The previous prime is 99311887. The next prime is 99311923. The reversal of 99311913 is 31911399.

It is not a de Polignac number, because 99311913 - 2⁸ = 99311657 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99311923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204103 + ... + 204588.

Almost surely, 2^99311913 is an apocalyptic number.

It is an amenable number.

99311913 is a deficient number, since it is larger than the sum of its proper divisors (49451975).

99311913 is an equidigital number, since it uses as much as digits as its factorization.

99311913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408706 (or 408694 counting only the distinct ones).

The product of its digits is 6561, while the sum is 36.

The square root of 99311913 is about 9965.5362625400. The cubic root of 99311913 is about 463.0918265343.

The spelling of 99311913 in words is "ninety-nine million, three hundred eleven thousand, nine hundred thirteen".