99131076 has 72 divisors (see below), whose sum is σ = 275131584. Its totient is φ = 29845440.

The previous prime is 99131059. The next prime is 99131083. The reversal of 99131076 is 67013199.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 99131076.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67785 + ... + 69231.

It is an arithmetic number, because the mean of its divisors is an integer number (3821272).

Almost surely, 2^99131076 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 99131076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137565792).

99131076 is an abundant number, since it is smaller than the sum of its proper divisors (176000508).

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

99131076 is a wasteful number, since it uses less digits than its factorization.

99131076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641 (or 1636 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 99131076 is about 9956.4590091056. The cubic root of 99131076 is about 462.8105745493.

The spelling of 99131076 in words is "ninety-nine million, one hundred thirty-one thousand, seventy-six".