315341465561 has 2 divisors, whose sum is σ = 315341465562. Its totient is φ = 315341465560.

The previous prime is 315341465557. The next prime is 315341465563. The reversal of 315341465561 is 165564143513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 296854984336 + 18486481225 = 544844^2 + 135965^2 .

It is a cyclic number.

It is not a de Polignac number, because 315341465561 - 2² = 315341465557 is a prime.

Together with 315341465563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (315341465563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157670732780 + 157670732781.

It is an arithmetic number, because the mean of its divisors is an integer number (157670732781).

Almost surely, 2^315341465561 is an apocalyptic number.

It is an amenable number.

315341465561 is a deficient number, since it is larger than the sum of its proper divisors (1).

315341465561 is an equidigital number, since it uses as much as digits as its factorization.

315341465561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648000, while the sum is 44.

The spelling of 315341465561 in words is "three hundred fifteen billion, three hundred forty-one million, four hundred sixty-five thousand, five hundred sixty-one".