30431111999 has 4 divisors (see below), whose sum is σ = 30635347800. Its totient is φ = 30226876200.

The previous prime is 30431111989. The next prime is 30431112007. The reversal of 30431111999 is 99911113403.

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 30431111999 - 2⁸ = 30431111743 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 (30431111959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102117677 + ... + 102117974.

It is an arithmetic number, because the mean of its divisors is an integer number (7658836950).

Almost surely, 2^30431111999 is an apocalyptic number.

30431111999 is a deficient number, since it is larger than the sum of its proper divisors (204235801).

30431111999 is a wasteful number, since it uses less digits than its factorization.

30431111999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204235800.

The product of its (nonzero) digits is 26244, while the sum is 41.

The spelling of 30431111999 in words is "thirty billion, four hundred thirty-one million, one hundred eleven thousand, nine hundred ninety-nine".