3122045981 has 2 divisors, whose sum is σ = 3122045982. Its totient is φ = 3122045980.

The previous prime is 3122045939. The next prime is 3122045989. The reversal of 3122045981 is 1895402213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2794073881 + 327972100 = 52859^2 + 18110^2 .

It is a cyclic number.

It is not a de Polignac number, because 3122045981 - 2²² = 3117851677 is a prime.

It is a super-2 number, since 2×3122045981² = 19494342214956504722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3122045989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561022990 + 1561022991.

It is an arithmetic number, because the mean of its divisors is an integer number (1561022991).

Almost surely, 2^3122045981 is an apocalyptic number.

It is an amenable number.

3122045981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3122045981 is an equidigital number, since it uses as much as digits as its factorization.

3122045981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 3122045981 is about 55875.2716413979. The cubic root of 3122045981 is about 1461.5480516635.

The spelling of 3122045981 in words is "three billion, one hundred twenty-two million, forty-five thousand, nine hundred eighty-one".