3111321013 has 2 divisors, whose sum is σ = 3111321014. Its totient is φ = 3111321012.

The previous prime is 3111320987. The next prime is 3111321047. The reversal of 3111321013 is 3101231113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2125486609 + 985834404 = 46103^2 + 31398^2 .

It is a cyclic number.

It is not a de Polignac number, because 3111321013 - 2²¹ = 3109223861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3111321053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555660506 + 1555660507.

It is an arithmetic number, because the mean of its divisors is an integer number (1555660507).

Almost surely, 2^3111321013 is an apocalyptic number.

It is an amenable number.

3111321013 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111321013 is an equidigital number, since it uses as much as digits as its factorization.

3111321013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 3111321013 is about 55779.2166761062. The cubic root of 3111321013 is about 1459.8725436055.

Adding to 3111321013 its reverse (3101231113), we get a palindrome (6212552126).

The spelling of 3111321013 in words is "three billion, one hundred eleven million, three hundred twenty-one thousand, thirteen".