99912303431 has 4 divisors (see below), whose sum is σ = 99918524112. Its totient is φ = 99906082752.

The previous prime is 99912303401. The next prime is 99912303451. The reversal of 99912303431 is 13430321999.

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 99912303431 - 2³⁴ = 82732434247 is a prime.

It is a super-2 number, since 2×99912303431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99912303401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3086186 + ... + 3118391.

It is an arithmetic number, because the mean of its divisors is an integer number (24979631028).

Almost surely, 2^99912303431 is an apocalyptic number.

99912303431 is a deficient number, since it is larger than the sum of its proper divisors (6220681).

99912303431 is a wasteful number, since it uses less digits than its factorization.

99912303431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6220680.

The product of its (nonzero) digits is 157464, while the sum is 44.

The spelling of 99912303431 in words is "ninety-nine billion, nine hundred twelve million, three hundred three thousand, four hundred thirty-one".