99818311 has 2 divisors, whose sum is σ = 99818312. Its totient is φ = 99818310.

The previous prime is 99818309. The next prime is 99818333. The reversal of 99818311 is 11381899.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (11381899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99818311 - 2¹ = 99818309 is a prime.

Together with 99818309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99818371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49909155 + 49909156.

It is an arithmetic number, because the mean of its divisors is an integer number (49909156).

Almost surely, 2^99818311 is an apocalyptic number.

99818311 is a deficient number, since it is larger than the sum of its proper divisors (1).

99818311 is an equidigital number, since it uses as much as digits as its factorization.

99818311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 40.

The square root of 99818311 is about 9990.9114198856. The cubic root of 99818311 is about 463.8776043969.

The spelling of 99818311 in words is "ninety-nine million, eight hundred eighteen thousand, three hundred eleven".