321214212431197 has 2 divisors, whose sum is σ = 321214212431198. Its totient is φ = 321214212431196.

The previous prime is 321214212431183. The next prime is 321214212431213. The reversal of 321214212431197 is 791134212412123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247899073425721 + 73315139005476 = 15744811^2 + 8562426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321214212431197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321214212431897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160607106215598 + 160607106215599.

It is an arithmetic number, because the mean of its divisors is an integer number (160607106215599).

Almost surely, 2^{321214212431197} is an apocalyptic number.

It is an amenable number.

321214212431197 is a deficient number, since it is larger than the sum of its proper divisors (1).

321214212431197 is an equidigital number, since it uses as much as digits as its factorization.

321214212431197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The spelling of 321214212431197 in words is "three hundred twenty-one trillion, two hundred fourteen billion, two hundred twelve million, four hundred thirty-one thousand, one hundred ninety-seven".