99612331 has 16 divisors (see below), whose sum is σ = 126558208. Its totient is φ = 76269600.

The previous prime is 99612319. The next prime is 99612341. The reversal of 99612331 is 13321699.

It is a cyclic number.

It is not a de Polignac number, because 99612331 - 2⁹ = 99611819 is a prime.

It is a super-2 number, since 2×99612331² = 19845232974507122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99612301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14835 + ... + 20476.

It is an arithmetic number, because the mean of its divisors is an integer number (7909888).

Almost surely, 2^99612331 is an apocalyptic number.

99612331 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

99612331 is a deficient number, since it is larger than the sum of its proper divisors (26945877).

99612331 is a wasteful number, since it uses less digits than its factorization.

99612331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35362.

The product of its digits is 8748, while the sum is 34.

The square root of 99612331 is about 9980.5977275913. The cubic root of 99612331 is about 463.5583065742.

The spelling of 99612331 in words is "ninety-nine million, six hundred twelve thousand, three hundred thirty-one".