313320231397 has 2 divisors, whose sum is σ = 313320231398. Its totient is φ = 313320231396.

The previous prime is 313320231337. The next prime is 313320231403. The reversal of 313320231397 is 793132023313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313296553441 + 23677956 = 559729^2 + 4866^2 .

It is a cyclic number.

It is not a de Polignac number, because 313320231397 - 2¹⁵ = 313320198629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313320231337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156660115698 + 156660115699.

It is an arithmetic number, because the mean of its divisors is an integer number (156660115699).

Almost surely, 2^313320231397 is an apocalyptic number.

It is an amenable number.

313320231397 is a deficient number, since it is larger than the sum of its proper divisors (1).

313320231397 is an equidigital number, since it uses as much as digits as its factorization.

313320231397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 37.

The spelling of 313320231397 in words is "three hundred thirteen billion, three hundred twenty million, two hundred thirty-one thousand, three hundred ninety-seven".