7312961 has 2 divisors, whose sum is σ = 7312962. Its totient is φ = 7312960.

The previous prime is 7312957. The next prime is 7312969. The reversal of 7312961 is 1692137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6250000 + 1062961 = 2500^2 + 1031^2 .

It is an emirp because it is prime and its reverse (1692137) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7312961 - 2² = 7312957 is a prime.

It is not a weakly prime, because it can be changed into another prime (7312969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3656480 + 3656481.

It is an arithmetic number, because the mean of its divisors is an integer number (3656481).

Almost surely, 2^7312961 is an apocalyptic number.

It is an amenable number.

7312961 is a deficient number, since it is larger than the sum of its proper divisors (1).

7312961 is an equidigital number, since it uses as much as digits as its factorization.

7312961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 29.

The square root of 7312961 is about 2704.2486941848. The cubic root of 7312961 is about 194.1024806621.

The spelling of 7312961 in words is "seven million, three hundred twelve thousand, nine hundred sixty-one".