99912313 has 2 divisors, whose sum is σ = 99912314. Its totient is φ = 99912312.

The previous prime is 99912283. The next prime is 99912341. The reversal of 99912313 is 31321999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99460729 + 451584 = 9973^2 + 672^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99912313 is a prime.

It is not a weakly prime, because it can be changed into another prime (99912353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49956156 + 49956157.

It is an arithmetic number, because the mean of its divisors is an integer number (49956157).

Almost surely, 2^99912313 is an apocalyptic number.

It is an amenable number.

99912313 is a deficient number, since it is larger than the sum of its proper divisors (1).

99912313 is an equidigital number, since it uses as much as digits as its factorization.

99912313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13122, while the sum is 37.

The square root of 99912313 is about 9995.6146884521. The cubic root of 99912313 is about 464.0231746872.

The spelling of 99912313 in words is "ninety-nine million, nine hundred twelve thousand, three hundred thirteen".