30571121913 has 64 divisors (see below), whose sum is σ = 46143903744. Its totient is φ = 17911296000.

The previous prime is 30571121909. The next prime is 30571121957. The reversal of 30571121913 is 31912117503.

It is not a de Polignac number, because 30571121913 - 2² = 30571121909 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30571121983) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5108383 + ... + 5114363.

It is an arithmetic number, because the mean of its divisors is an integer number (720998496).

Almost surely, 2^30571121913 is an apocalyptic number.

It is an amenable number.

30571121913 is a deficient number, since it is larger than the sum of its proper divisors (15572781831).

30571121913 is a wasteful number, since it uses less digits than its factorization.

30571121913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6146.

The product of its (nonzero) digits is 5670, while the sum is 33.

The spelling of 30571121913 in words is "thirty billion, five hundred seventy-one million, one hundred twenty-one thousand, nine hundred thirteen".