99073431 has 12 divisors (see below), whose sum is σ = 143442208. Its totient is φ = 65893824.

The previous prime is 99073423. The next prime is 99073439. The reversal of 99073431 is 13437099.

It is an interprime number because it is at equal distance from previous prime (99073423) and next prime (99073439).

It is not a de Polignac number, because 99073431 - 2³ = 99073423 is a prime.

It is a super-2 number, since 2×99073431² = 19631089460223522, which 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 (99073439) 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 11 ways as a sum of consecutive naturals, for example, 8815 + ... + 16608.

Almost surely, 2^99073431 is an apocalyptic number.

99073431 is a deficient number, since it is larger than the sum of its proper divisors (44368777).

99073431 is a wasteful number, since it uses less digits than its factorization.

99073431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25862 (or 25859 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 99073431 is about 9953.5637336584. The cubic root of 99073431 is about 462.7208486041.

The spelling of 99073431 in words is "ninety-nine million, seventy-three thousand, four hundred thirty-one".