30891108914 has 4 divisors (see below), whose sum is σ = 46336663374. Its totient is φ = 15445554456.

The previous prime is 30891108869. The next prime is 30891108917. The reversal of 30891108914 is 41980119803.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18699195025 + 12191913889 = 136745^2 + 110417^2 .

It is a super-2 number, since 2×30891108914² (a number of 22 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 7722777227 + ... + 7722777230.

Almost surely, 2^30891108914 is an apocalyptic number.

30891108914 is a deficient number, since it is larger than the sum of its proper divisors (15445554460).

30891108914 is a wasteful number, since it uses less digits than its factorization.

30891108914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15445554459.

The product of its (nonzero) digits is 62208, while the sum is 44.

The spelling of 30891108914 in words is "thirty billion, eight hundred ninety-one million, one hundred eight thousand, nine hundred fourteen".