3146982721 has 2 divisors, whose sum is σ = 3146982722. Its totient is φ = 3146982720.

The previous prime is 3146982703. The next prime is 3146982791. The reversal of 3146982721 is 1272896413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2082918321 + 1064064400 = 45639^2 + 32620^2 .

It is an emirp because it is prime and its reverse (1272896413) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3146982721 is a prime.

It is not a weakly prime, because it can be changed into another prime (3146982791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1573491360 + 1573491361.

It is an arithmetic number, because the mean of its divisors is an integer number (1573491361).

Almost surely, 2^3146982721 is an apocalyptic number.

It is an amenable number.

3146982721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3146982721 is an equidigital number, since it uses as much as digits as its factorization.

3146982721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 3146982721 is about 56097.9743038909. The cubic root of 3146982721 is about 1465.4290148214.

The spelling of 3146982721 in words is "three billion, one hundred forty-six million, nine hundred eighty-two thousand, seven hundred twenty-one".