30868507121 has 4 divisors (see below), whose sum is σ = 31046937972. Its totient is φ = 30690076272.

The previous prime is 30868507099. The next prime is 30868507133. The reversal of 30868507121 is 12170586803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12170586803 = 29 ⋅419675407.

It can be written as a sum of positive squares in 2 ways, for example, as 29829089521 + 1039417600 = 172711^2 + 32240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30868507121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30868507141) 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, 89215166 + ... + 89215511.

It is an arithmetic number, because the mean of its divisors is an integer number (7761734493).

Almost surely, 2^30868507121 is an apocalyptic number.

It is an amenable number.

30868507121 is a deficient number, since it is larger than the sum of its proper divisors (178430851).

30868507121 is a wasteful number, since it uses less digits than its factorization.

30868507121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178430850.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 30868507121 in words is "thirty billion, eight hundred sixty-eight million, five hundred seven thousand, one hundred twenty-one".