971315311 has 2 divisors, whose sum is σ = 971315312. Its totient is φ = 971315310.

The previous prime is 971315273. The next prime is 971315327. The reversal of 971315311 is 113513179.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 971315311 - 2²³ = 962926703 is a prime.

It is a Chen prime.

It is equal to p_49462411 and since 971315311 and 49462411 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (971315381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485657655 + 485657656.

It is an arithmetic number, because the mean of its divisors is an integer number (485657656).

Almost surely, 2^971315311 is an apocalyptic number.

971315311 is a deficient number, since it is larger than the sum of its proper divisors (1).

971315311 is an equidigital number, since it uses as much as digits as its factorization.

971315311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2835, while the sum is 31.

The square root of 971315311 is about 31165.9318968646. The cubic root of 971315311 is about 990.3455281336.

The spelling of 971315311 in words is "nine hundred seventy-one million, three hundred fifteen thousand, three hundred eleven".