99868031 has 2 divisors, whose sum is σ = 99868032. Its totient is φ = 99868030.

The previous prime is 99868003. The next prime is 99868033. The reversal of 99868031 is 13086899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99868031 - 2¹⁰ = 99867007 is a prime.

It is a super-2 number, since 2×99868031² = 19947247231633922, which contains 22 as substring.

Together with 99868033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99868033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49934015 + 49934016.

It is an arithmetic number, because the mean of its divisors is an integer number (49934016).

Almost surely, 2^99868031 is an apocalyptic number.

99868031 is a deficient number, since it is larger than the sum of its proper divisors (1).

99868031 is an equidigital number, since it uses as much as digits as its factorization.

99868031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 99868031 is about 9993.3993715852. The cubic root of 99868031 is about 463.9546115308.

The spelling of 99868031 in words is "ninety-nine million, eight hundred sixty-eight thousand, thirty-one".