99331523 has 4 divisors (see below), whose sum is σ = 99393840. Its totient is φ = 99269208.

The previous prime is 99331513. The next prime is 99331541. The reversal of 99331523 is 32513399.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99331523 - 2¹⁸ = 99069379 is a prime.

It is a super-2 number, since 2×99331523² = 19733502922999058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99331513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28703 + ... + 31976.

It is an arithmetic number, because the mean of its divisors is an integer number (24848460).

Almost surely, 2^99331523 is an apocalyptic number.

99331523 is a deficient number, since it is larger than the sum of its proper divisors (62317).

99331523 is a wasteful number, since it uses less digits than its factorization.

99331523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62316.

The product of its digits is 21870, while the sum is 35.

The square root of 99331523 is about 9966.5201048310. The cubic root of 99331523 is about 463.1223050298.

The spelling of 99331523 in words is "ninety-nine million, three hundred thirty-one thousand, five hundred twenty-three".