99208131 has 24 divisors (see below), whose sum is σ = 150876096. Its totient is φ = 57501840.

The previous prime is 99208129. The next prime is 99208147. The reversal of 99208131 is 13180299.

It is not a de Polignac number, because 99208131 - 2¹ = 99208129 is a prime.

It is a super-2 number, since 2×99208131² = 19684506513026322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 99208092 and 99208101.

It is not an unprimeable number, because it can be changed into a prime (99208531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14616 + ... + 20298.

It is an arithmetic number, because the mean of its divisors is an integer number (6286504).

Almost surely, 2^99208131 is an apocalyptic number.

99208131 is a deficient number, since it is larger than the sum of its proper divisors (51667965).

99208131 is a wasteful number, since it uses less digits than its factorization.

99208131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5743 (or 5720 counting only the distinct ones).

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

The square root of 99208131 is about 9960.3278560497. The cubic root of 99208131 is about 462.9304583577.

The spelling of 99208131 in words is "ninety-nine million, two hundred eight thousand, one hundred thirty-one".