99901311 has 4 divisors (see below), whose sum is σ = 133201752. Its totient is φ = 66600872.

The previous prime is 99901301. The next prime is 99901363. The reversal of 99901311 is 11310999.

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 99901311 - 2⁵ = 99901279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99901301) 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, 16650216 + ... + 16650221.

It is an arithmetic number, because the mean of its divisors is an integer number (33300438).

Almost surely, 2^99901311 is an apocalyptic number.

99901311 is a deficient number, since it is larger than the sum of its proper divisors (33300441).

99901311 is a wasteful number, since it uses less digits than its factorization.

99901311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33300440.

The product of its (nonzero) digits is 2187, while the sum is 33.

The square root of 99901311 is about 9995.0643319590. The cubic root of 99901311 is about 464.0061418504.

The spelling of 99901311 in words is "ninety-nine million, nine hundred one thousand, three hundred eleven".