99531168 has 48 divisors (see below), whose sum is σ = 285024096. Its totient is φ = 30160640.

The previous prime is 99531167. The next prime is 99531169. The reversal of 99531168 is 86113599.

It is an interprime number because it is at equal distance from previous prime (99531167) and next prime (99531169).

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (99531163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46071 + ... + 48182.

It is an arithmetic number, because the mean of its divisors is an integer number (5938002).

Almost surely, 2^99531168 is an apocalyptic number.

It is an amenable number.

99531168 is an abundant number, since it is smaller than the sum of its proper divisors (185492928).

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

99531168 is a wasteful number, since it uses less digits than its factorization.

99531168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94277 (or 94269 counting only the distinct ones).

The product of its digits is 58320, while the sum is 42.

The square root of 99531168 is about 9976.5308599733. The cubic root of 99531168 is about 463.4323716772.

Subtracting from 99531168 its reverse (86113599), we obtain a square (13417569 = 3663²).

It can be divided in two parts, 99531 and 168, that added together give a palindrome (99699).

The spelling of 99531168 in words is "ninety-nine million, five hundred thirty-one thousand, one hundred sixty-eight".