315722741 has 2 divisors, whose sum is σ = 315722742. Its totient is φ = 315722740.

The previous prime is 315722683. The next prime is 315722779. The reversal of 315722741 is 147227513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 292239025 + 23483716 = 17095^2 + 4846^2 .

It is a cyclic number.

It is not a de Polignac number, because 315722741 - 2¹⁰ = 315721717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 315722698 and 315722707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315782741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157861370 + 157861371.

It is an arithmetic number, because the mean of its divisors is an integer number (157861371).

Almost surely, 2^315722741 is an apocalyptic number.

It is an amenable number.

315722741 is a deficient number, since it is larger than the sum of its proper divisors (1).

315722741 is an equidigital number, since it uses as much as digits as its factorization.

315722741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 32.

The square root of 315722741 is about 17768.5886046135. The cubic root of 315722741 is about 680.9291946771.

The spelling of 315722741 in words is "three hundred fifteen million, seven hundred twenty-two thousand, seven hundred forty-one".