321970047277 has 2 divisors, whose sum is σ = 321970047278. Its totient is φ = 321970047276.

The previous prime is 321970047271. The next prime is 321970047313. The reversal of 321970047277 is 772740079123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 263180286121 + 58789761156 = 513011^2 + 242466^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321970047277 is a prime.

It is a super-2 number, since 2×321970047277² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 321970047277.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321970047271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160985023638 + 160985023639.

It is an arithmetic number, because the mean of its divisors is an integer number (160985023639).

Almost surely, 2^321970047277 is an apocalyptic number.

It is an amenable number.

321970047277 is a deficient number, since it is larger than the sum of its proper divisors (1).

321970047277 is an equidigital number, since it uses as much as digits as its factorization.

321970047277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1037232, while the sum is 49.

The spelling of 321970047277 in words is "three hundred twenty-one billion, nine hundred seventy million, forty-seven thousand, two hundred seventy-seven".