99231810 has 16 divisors (see below), whose sum is σ = 238156416. Its totient is φ = 26461808.

The previous prime is 99231791. The next prime is 99231829. The reversal of 99231810 is 1813299.

It is an interprime number because it is at equal distance from previous prime (99231791) and next prime (99231829).

It is a super-2 number, since 2×99231810² = 19693904231752200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1653834 + ... + 1653893.

It is an arithmetic number, because the mean of its divisors is an integer number (14884776).

Almost surely, 2^99231810 is an apocalyptic number.

99231810 is an abundant number, since it is smaller than the sum of its proper divisors (138924606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99231810 is a wasteful number, since it uses less digits than its factorization.

99231810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3307737.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 99231810 is about 9961.5164508221. The cubic root of 99231810 is about 462.9672861803.

The spelling of 99231810 in words is "ninety-nine million, two hundred thirty-one thousand, eight hundred ten".