321131030317 has 2 divisors, whose sum is σ = 321131030318. Its totient is φ = 321131030316.

The previous prime is 321131030299. The next prime is 321131030327. The reversal of 321131030317 is 713030131123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227134215396 + 93996814921 = 476586^2 + 306589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321131030317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321131030291 and 321131030300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321131030327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160565515158 + 160565515159.

It is an arithmetic number, because the mean of its divisors is an integer number (160565515159).

Almost surely, 2^321131030317 is an apocalyptic number.

It is an amenable number.

321131030317 is a deficient number, since it is larger than the sum of its proper divisors (1).

321131030317 is an equidigital number, since it uses as much as digits as its factorization.

321131030317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 25.

The spelling of 321131030317 in words is "three hundred twenty-one billion, one hundred thirty-one million, thirty thousand, three hundred seventeen".