320123000677913 has 2 divisors, whose sum is σ = 320123000677914. Its totient is φ = 320123000677912.

The previous prime is 320123000677901. The next prime is 320123000677979. The reversal of 320123000677913 is 319776000321023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178233260262409 + 141889740415504 = 13350403^2 + 11911748^2 .

It is a cyclic number.

It is not a de Polignac number, because 320123000677913 - 2²⁰ = 320122999629337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (320123000677213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160061500338956 + 160061500338957.

It is an arithmetic number, because the mean of its divisors is an integer number (160061500338957).

Almost surely, 2^{320123000677913} is an apocalyptic number.

It is an amenable number.

320123000677913 is a deficient number, since it is larger than the sum of its proper divisors (1).

320123000677913 is an equidigital number, since it uses as much as digits as its factorization.

320123000677913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 44.

Adding to 320123000677913 its reverse (319776000321023), we get a palindrome (639899000998936).

The spelling of 320123000677913 in words is "three hundred twenty trillion, one hundred twenty-three billion, six hundred seventy-seven thousand, nine hundred thirteen".