3031213122013 has 4 divisors (see below), whose sum is σ = 3031220511100. Its totient is φ = 3031205732928.

The previous prime is 3031213121999. The next prime is 3031213122061. The reversal of 3031213122013 is 3102213121303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2773334000889 + 257879121124 = 1665333^2 + 507818^2 .

It is a cyclic number.

It is not a de Polignac number, because 3031213122013 - 2²¹ = 3031211024861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3031213122713) 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, 3040620 + ... + 3912517.

It is an arithmetic number, because the mean of its divisors is an integer number (757805127775).

Almost surely, 2^{3031213122013} is an apocalyptic number.

It is an amenable number.

3031213122013 is a deficient number, since it is larger than the sum of its proper divisors (7389087).

3031213122013 is an equidigital number, since it uses as much as digits as its factorization.

3031213122013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7389086.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 3031213122013 its reverse (3102213121303), we get a palindrome (6133426243316).

The spelling of 3031213122013 in words is "three trillion, thirty-one billion, two hundred thirteen million, one hundred twenty-two thousand, thirteen".