3113566321 has 2 divisors, whose sum is σ = 3113566322. Its totient is φ = 3113566320.

The previous prime is 3113566319. The next prime is 3113566369. The reversal of 3113566321 is 1236653113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2707745296 + 405821025 = 52036^2 + 20145^2 .

It is a cyclic number.

It is not a de Polignac number, because 3113566321 - 2¹ = 3113566319 is a prime.

Together with 3113566319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3113566921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1556783160 + 1556783161.

It is an arithmetic number, because the mean of its divisors is an integer number (1556783161).

Almost surely, 2^3113566321 is an apocalyptic number.

It is an amenable number.

3113566321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3113566321 is an equidigital number, since it uses as much as digits as its factorization.

3113566321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 31.

The square root of 3113566321 is about 55799.3397900011. The cubic root of 3113566321 is about 1460.2236351306.

The spelling of 3113566321 in words is "three billion, one hundred thirteen million, five hundred sixty-six thousand, three hundred twenty-one".