2271367961 has 2 divisors, whose sum is σ = 2271367962. Its totient is φ = 2271367960.

The previous prime is 2271367907. The next prime is 2271367991. The reversal of 2271367961 is 1697631722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2197734400 + 73633561 = 46880^2 + 8581^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2271367961 is a prime.

It is a super-2 number, since 2×2271367961² = 10318224828514595042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2271367991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135683980 + 1135683981.

It is an arithmetic number, because the mean of its divisors is an integer number (1135683981).

Almost surely, 2^2271367961 is an apocalyptic number.

It is an amenable number.

2271367961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2271367961 is an equidigital number, since it uses as much as digits as its factorization.

2271367961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 2271367961 is about 47658.8707482668. The cubic root of 2271367961 is about 1314.5057752312.

The spelling of 2271367961 in words is "two billion, two hundred seventy-one million, three hundred sixty-seven thousand, nine hundred sixty-one".