99131104 has 36 divisors (see below), whose sum is σ = 204206184. Its totient is φ = 47281344.

The previous prime is 99131099. The next prime is 99131107. The reversal of 99131104 is 40113199.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99131107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 269929 + ... + 270295.

It is an arithmetic number, because the mean of its divisors is an integer number (5672394).

Almost surely, 2^99131104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99131104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102103092).

99131104 is an abundant number, since it is smaller than the sum of its proper divisors (105075080).

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

99131104 is an equidigital number, since it uses as much as digits as its factorization.

99131104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 99131104 is about 9956.4604152279. The cubic root of 99131104 is about 462.8106181236.

It can be divided in two parts, 99131 and 104, that added together give a triangular number (99235 = T₄₄₅).

The spelling of 99131104 in words is "ninety-nine million, one hundred thirty-one thousand, one hundred four".