99313831 has 2 divisors, whose sum is σ = 99313832. Its totient is φ = 99313830.

The previous prime is 99313811. The next prime is 99313843. The reversal of 99313831 is 13831399.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99313831 is a prime.

It is a super-2 number, since 2×99313831² = 19726474055793122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99313811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49656915 + 49656916.

It is an arithmetic number, because the mean of its divisors is an integer number (49656916).

Almost surely, 2^99313831 is an apocalyptic number.

99313831 is a deficient number, since it is larger than the sum of its proper divisors (1).

99313831 is an equidigital number, since it uses as much as digits as its factorization.

99313831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 37.

The square root of 99313831 is about 9965.6324937256. The cubic root of 99313831 is about 463.0948077289.

The spelling of 99313831 in words is "ninety-nine million, three hundred thirteen thousand, eight hundred thirty-one".