30611042513 has 4 divisors (see below), whose sum is σ = 31357653348. Its totient is φ = 29864431680.

The previous prime is 30611042489. The next prime is 30611042533. The reversal of 30611042513 is 31524011603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31524011603 = 7 ⋅4503430229.

It can be written as a sum of positive squares in 2 ways, for example, as 10285407889 + 20325634624 = 101417^2 + 142568^2 .

It is a cyclic number.

It is not a de Polignac number, because 30611042513 - 2²⁰ = 30609993937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30611042533) 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, 373305356 + ... + 373305437.

It is an arithmetic number, because the mean of its divisors is an integer number (7839413337).

Almost surely, 2^30611042513 is an apocalyptic number.

It is an amenable number.

30611042513 is a deficient number, since it is larger than the sum of its proper divisors (746610835).

30611042513 is an equidigital number, since it uses as much as digits as its factorization.

30611042513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746610834.

The product of its (nonzero) digits is 2160, while the sum is 26.

The spelling of 30611042513 in words is "thirty billion, six hundred eleven million, forty-two thousand, five hundred thirteen".