30121313113 has 4 divisors (see below), whose sum is σ = 30126643380. Its totient is φ = 30115982848.

The previous prime is 30121313083. The next prime is 30121313143. The reversal of 30121313113 is 31131312103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31131312103 = 30389 ⋅1024427.

It is an interprime number because it is at equal distance from previous prime (30121313083) and next prime (30121313143).

It can be written as a sum of positive squares in 2 ways, for example, as 17013810969 + 13107502144 = 130437^2 + 114488^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30121313113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30121313143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2656648 + ... + 2667961.

It is an arithmetic number, because the mean of its divisors is an integer number (7531660845).

Almost surely, 2^30121313113 is an apocalyptic number.

It is an amenable number.

30121313113 is a deficient number, since it is larger than the sum of its proper divisors (5330267).

30121313113 is an equidigital number, since it uses as much as digits as its factorization.

30121313113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5330266.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 30121313113 its reverse (31131312103), we get a palindrome (61252625216).

The spelling of 30121313113 in words is "thirty billion, one hundred twenty-one million, three hundred thirteen thousand, one hundred thirteen".