99931013999 has 4 divisors (see below), whose sum is σ = 99935405064. Its totient is φ = 99926622936.

The previous prime is 99931013977. The next prime is 99931014011.

99931013999 is nontrivially palindromic in base 10.

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 99931013999 - 2¹⁶ = 99930948463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99931013099) 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, 2161217 + ... + 2206970.

It is an arithmetic number, because the mean of its divisors is an integer number (24983851266).

Almost surely, 2^99931013999 is an apocalyptic number.

99931013999 is a deficient number, since it is larger than the sum of its proper divisors (4391065).

99931013999 is a wasteful number, since it uses less digits than its factorization.

99931013999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391064.

The product of its (nonzero) digits is 4782969, while the sum is 62.

The spelling of 99931013999 in words is "ninety-nine billion, nine hundred thirty-one million, thirteen thousand, nine hundred ninety-nine".