323115819543857 has 2 divisors, whose sum is σ = 323115819543858. Its totient is φ = 323115819543856.

The previous prime is 323115819543841. The next prime is 323115819543931. The reversal of 323115819543857 is 758345918511323.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 317764814269681 + 5351005274176 = 17825959^2 + 2313224^2 .

It is a cyclic number.

It is not a de Polignac number, because 323115819543857 - 2⁴ = 323115819543841 is a prime.

It is a super-2 number, since 2×323115819543857² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 323115819543793 and 323115819543802.

It is not a weakly prime, because it can be changed into another prime (323115819593857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161557909771928 + 161557909771929.

It is an arithmetic number, because the mean of its divisors is an integer number (161557909771929).

Almost surely, 2^{323115819543857} is an apocalyptic number.

It is an amenable number.

323115819543857 is a deficient number, since it is larger than the sum of its proper divisors (1).

323115819543857 is an equidigital number, since it uses as much as digits as its factorization.

323115819543857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864000, while the sum is 65.

The spelling of 323115819543857 in words is "three hundred twenty-three trillion, one hundred fifteen billion, eight hundred nineteen million, five hundred forty-three thousand, eight hundred fifty-seven".