321330112757 has 2 divisors, whose sum is σ = 321330112758. Its totient is φ = 321330112756.

The previous prime is 321330112739. The next prime is 321330112759. The reversal of 321330112757 is 757211033123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250279077841 + 71051034916 = 500279^2 + 266554^2 .

It is an emirp because it is prime and its reverse (757211033123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321330112757 - 2⁶ = 321330112693 is a prime.

Together with 321330112759, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321330112759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160665056378 + 160665056379.

It is an arithmetic number, because the mean of its divisors is an integer number (160665056379).

Almost surely, 2^321330112757 is an apocalyptic number.

It is an amenable number.

321330112757 is a deficient number, since it is larger than the sum of its proper divisors (1).

321330112757 is an equidigital number, since it uses as much as digits as its factorization.

321330112757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 35.

The spelling of 321330112757 in words is "three hundred twenty-one billion, three hundred thirty million, one hundred twelve thousand, seven hundred fifty-seven".