320975117 has 2 divisors, whose sum is σ = 320975118. Its totient is φ = 320975116.

The previous prime is 320975093. The next prime is 320975129. The reversal of 320975117 is 711579023.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 280194121 + 40780996 = 16739^2 + 6386^2 .

It is an emirp because it is prime and its reverse (711579023) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320975117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320972117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160487558 + 160487559.

It is an arithmetic number, because the mean of its divisors is an integer number (160487559).

Almost surely, 2^320975117 is an apocalyptic number.

It is an amenable number.

320975117 is a deficient number, since it is larger than the sum of its proper divisors (1).

320975117 is an equidigital number, since it uses as much as digits as its factorization.

320975117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 320975117 is about 17915.7784368975. The cubic root of 320975117 is about 684.6844352512.

The spelling of 320975117 in words is "three hundred twenty million, nine hundred seventy-five thousand, one hundred seventeen".