972775313 has 2 divisors, whose sum is σ = 972775314. Its totient is φ = 972775312.

The previous prime is 972775291. The next prime is 972775327. The reversal of 972775313 is 313577279.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 922762129 + 50013184 = 30377^2 + 7072^2 .

It is a cyclic number.

It is not a de Polignac number, because 972775313 - 2⁶ = 972775249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (972775373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486387656 + 486387657.

It is an arithmetic number, because the mean of its divisors is an integer number (486387657).

Almost surely, 2^972775313 is an apocalyptic number.

It is an amenable number.

972775313 is a deficient number, since it is larger than the sum of its proper divisors (1).

972775313 is an equidigital number, since it uses as much as digits as its factorization.

972775313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 277830, while the sum is 44.

The square root of 972775313 is about 31189.3461457595. The cubic root of 972775313 is about 990.8414819479.

The spelling of 972775313 in words is "nine hundred seventy-two million, seven hundred seventy-five thousand, three hundred thirteen".