30131202313 has 4 divisors (see below), whose sum is σ = 30197135380. Its totient is φ = 30065269248.

The previous prime is 30131202289. The next prime is 30131202319. The reversal of 30131202313 is 31320213103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31320213103 = 11777 ⋅2659439.

It can be written as a sum of positive squares in 2 ways, for example, as 9715650624 + 20415551689 = 98568^2 + 142883^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30131202313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30131202319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32965848 + ... + 32966761.

It is an arithmetic number, because the mean of its divisors is an integer number (7549283845).

Almost surely, 2^30131202313 is an apocalyptic number.

It is an amenable number.

30131202313 is a deficient number, since it is larger than the sum of its proper divisors (65933067).

30131202313 is an equidigital number, since it uses as much as digits as its factorization.

30131202313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65933066.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 30131202313 its reverse (31320213103), we get a palindrome (61451415416).

The spelling of 30131202313 in words is "thirty billion, one hundred thirty-one million, two hundred two thousand, three hundred thirteen".