99102131 has 2 divisors, whose sum is σ = 99102132. Its totient is φ = 99102130.

The previous prime is 99102127. The next prime is 99102139. The reversal of 99102131 is 13120199.

It is a weak prime.

It is an emirp because it is prime and its reverse (13120199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99102131 - 2² = 99102127 is a prime.

It is a super-2 number, since 2×99102131² = 19642464737482322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99102131.

It is not a weakly prime, because it can be changed into another prime (99102139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49551065 + 49551066.

It is an arithmetic number, because the mean of its divisors is an integer number (49551066).

Almost surely, 2^99102131 is an apocalyptic number.

99102131 is a deficient number, since it is larger than the sum of its proper divisors (1).

99102131 is an equidigital number, since it uses as much as digits as its factorization.

99102131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 99102131 is about 9955.0053239564. The cubic root of 99102131 is about 462.7655252514.

The spelling of 99102131 in words is "ninety-nine million, one hundred two thousand, one hundred thirty-one".