30891108913 has 8 divisors (see below), whose sum is σ = 35313770880. Its totient is φ = 26470858560.

The previous prime is 30891108869. The next prime is 30891108917. The reversal of 30891108913 is 31980119803.

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

It is a cyclic number.

It is not a de Polignac number, because 30891108913 - 2⁹ = 30891108401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30891108913.

It is not an unprimeable number, because it can be changed into a prime (30891108917) 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, 575368 + ... + 626761.

It is an arithmetic number, because the mean of its divisors is an integer number (4414221360).

Almost surely, 2^30891108913 is an apocalyptic number.

It is an amenable number.

30891108913 is a deficient number, since it is larger than the sum of its proper divisors (4422661967).

30891108913 is a wasteful number, since it uses less digits than its factorization.

30891108913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205807.

The product of its (nonzero) digits is 46656, while the sum is 43.

The spelling of 30891108913 in words is "thirty billion, eight hundred ninety-one million, one hundred eight thousand, nine hundred thirteen".