2971207961 has 2 divisors, whose sum is σ = 2971207962. Its totient is φ = 2971207960.

The previous prime is 2971207891. The next prime is 2971207991. The reversal of 2971207961 is 1697021792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2402862361 + 568345600 = 49019^2 + 23840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2971207961 is a prime.

It is not a weakly prime, because it can be changed into another prime (2971207991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1485603980 + 1485603981.

It is an arithmetic number, because the mean of its divisors is an integer number (1485603981).

Almost surely, 2^2971207961 is an apocalyptic number.

It is an amenable number.

2971207961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2971207961 is an equidigital number, since it uses as much as digits as its factorization.

2971207961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 2971207961 is about 54508.7879245173. The cubic root of 2971207961 is about 1437.6208077525.

The spelling of 2971207961 in words is "two billion, nine hundred seventy-one million, two hundred seven thousand, nine hundred sixty-one".