321142511197 has 2 divisors, whose sum is σ = 321142511198. Its totient is φ = 321142511196.

The previous prime is 321142511141. The next prime is 321142511233. The reversal of 321142511197 is 791115241123.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 234223089156 + 86919422041 = 483966^2 + 294821^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321142511197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321142511297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160571255598 + 160571255599.

It is an arithmetic number, because the mean of its divisors is an integer number (160571255599).

Almost surely, 2^321142511197 is an apocalyptic number.

It is an amenable number.

321142511197 is a deficient number, since it is larger than the sum of its proper divisors (1).

321142511197 is an equidigital number, since it uses as much as digits as its factorization.

321142511197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 37.

The spelling of 321142511197 in words is "three hundred twenty-one billion, one hundred forty-two million, five hundred eleven thousand, one hundred ninety-seven".