30999999999 has 8 divisors (see below), whose sum is σ = 41346822400. Its totient is φ = 20659922136.

The previous prime is 30999999997. The next prime is 31000000027. The reversal of 30999999999 is 99999999903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30999999999 - 2¹ = 30999999997 is a prime.

It is a Duffinian number.

30999999999 is a modest number, since divided by 999999 gives 30999 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30999999997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1675399 + ... + 1693800.

It is an arithmetic number, because the mean of its divisors is an integer number (5168352800).

Almost surely, 2^30999999999 is an apocalyptic number.

30999999999 is a deficient number, since it is larger than the sum of its proper divisors (10346822401).

30999999999 is a wasteful number, since it uses less digits than its factorization.

30999999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372269.

The product of its (nonzero) digits is 1162261467, while the sum is 84.

The spelling of 30999999999 in words is "thirty billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".