971315567 has 2 divisors, whose sum is σ = 971315568. Its totient is φ = 971315566.

The previous prime is 971315563. The next prime is 971315573. The reversal of 971315567 is 765513179.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 971315567 - 2² = 971315563 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (971315563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485657783 + 485657784.

It is an arithmetic number, because the mean of its divisors is an integer number (485657784).

Almost surely, 2^971315567 is an apocalyptic number.

971315567 is a deficient number, since it is larger than the sum of its proper divisors (1).

971315567 is an equidigital number, since it uses as much as digits as its factorization.

971315567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 198450, while the sum is 44.

The square root of 971315567 is about 31165.9360039130. The cubic root of 971315567 is about 990.3456151388.

The spelling of 971315567 in words is "nine hundred seventy-one million, three hundred fifteen thousand, five hundred sixty-seven".