99956231 has 2 divisors, whose sum is σ = 99956232. Its totient is φ = 99956230.

The previous prime is 99956191. The next prime is 99956249. The reversal of 99956231 is 13265999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99956231 - 2²² = 95761927 is a prime.

It is a super-2 number, since 2×99956231² = 19982496231450722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99956261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49978115 + 49978116.

It is an arithmetic number, because the mean of its divisors is an integer number (49978116).

Almost surely, 2^99956231 is an apocalyptic number.

99956231 is a deficient number, since it is larger than the sum of its proper divisors (1).

99956231 is an equidigital number, since it uses as much as digits as its factorization.

99956231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131220, while the sum is 44.

The square root of 99956231 is about 9997.8113104819. The cubic root of 99956231 is about 464.0911542450.

The spelling of 99956231 in words is "ninety-nine million, nine hundred fifty-six thousand, two hundred thirty-one".