315506963 has 2 divisors, whose sum is σ = 315506964. Its totient is φ = 315506962.

The previous prime is 315506959. The next prime is 315506977. The reversal of 315506963 is 369605513.

It is a weak prime.

It is an emirp because it is prime and its reverse (369605513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315506963 - 2² = 315506959 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (315506993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157753481 + 157753482.

It is an arithmetic number, because the mean of its divisors is an integer number (157753482).

Almost surely, 2^315506963 is an apocalyptic number.

315506963 is a deficient number, since it is larger than the sum of its proper divisors (1).

315506963 is an equidigital number, since it uses as much as digits as its factorization.

315506963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72900, while the sum is 38.

The square root of 315506963 is about 17762.5156720550. The cubic root of 315506963 is about 680.7740342510.

The spelling of 315506963 in words is "three hundred fifteen million, five hundred six thousand, nine hundred sixty-three".