30991606104 has 16 divisors (see below), whose sum is σ = 77479015320. Its totient is φ = 10330535360.

The previous prime is 30991606057. The next prime is 30991606109. The reversal of 30991606104 is 40160619903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30991606109) 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, 645658437 + ... + 645658484.

Almost surely, 2^30991606104 is an apocalyptic number.

It is an amenable number.

30991606104 is an abundant number, since it is smaller than the sum of its proper divisors (46487409216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30991606104 is a wasteful number, since it uses less digits than its factorization.

30991606104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291316930 (or 1291316926 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The spelling of 30991606104 in words is "thirty billion, nine hundred ninety-one million, six hundred six thousand, one hundred four".