315606461 has 2 divisors, whose sum is σ = 315606462. Its totient is φ = 315606460.

The previous prime is 315606433. The next prime is 315606463. The reversal of 315606461 is 164606513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315595225 + 11236 = 17765^2 + 106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315606461 is a prime.

Together with 315606463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315606463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157803230 + 157803231.

It is an arithmetic number, because the mean of its divisors is an integer number (157803231).

Almost surely, 2^315606461 is an apocalyptic number.

It is an amenable number.

315606461 is a deficient number, since it is larger than the sum of its proper divisors (1).

315606461 is an equidigital number, since it uses as much as digits as its factorization.

315606461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 315606461 is about 17765.3162369827. The cubic root of 315606461 is about 680.8455894978.

The spelling of 315606461 in words is "three hundred fifteen million, six hundred six thousand, four hundred sixty-one".