321040223403397 has 2 divisors, whose sum is σ = 321040223403398. Its totient is φ = 321040223403396.

The previous prime is 321040223403391. The next prime is 321040223403421. The reversal of 321040223403397 is 793304322040123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318141124653121 + 2899098750276 = 17836511^2 + 1702674^2 .

It is a cyclic number.

It is not a de Polignac number, because 321040223403397 - 2⁷ = 321040223403269 is a prime.

It is a super-2 number, since 2×321040223403397² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321040223403391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160520111701698 + 160520111701699.

It is an arithmetic number, because the mean of its divisors is an integer number (160520111701699).

Almost surely, 2^{321040223403397} is an apocalyptic number.

It is an amenable number.

321040223403397 is a deficient number, since it is larger than the sum of its proper divisors (1).

321040223403397 is an equidigital number, since it uses as much as digits as its factorization.

321040223403397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 43.

The spelling of 321040223403397 in words is "three hundred twenty-one trillion, forty billion, two hundred twenty-three million, four hundred three thousand, three hundred ninety-seven".