321110200393 has 2 divisors, whose sum is σ = 321110200394. Its totient is φ = 321110200392.

The previous prime is 321110200309. The next prime is 321110200417. The reversal of 321110200393 is 393002011123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316713449529 + 4396750864 = 562773^2 + 66308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321110200393 is a prime.

It is a super-2 number, since 2×321110200393² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (321110200493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160555100196 + 160555100197.

It is an arithmetic number, because the mean of its divisors is an integer number (160555100197).

Almost surely, 2^321110200393 is an apocalyptic number.

It is an amenable number.

321110200393 is a deficient number, since it is larger than the sum of its proper divisors (1).

321110200393 is an equidigital number, since it uses as much as digits as its factorization.

321110200393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 321110200393 in words is "three hundred twenty-one billion, one hundred ten million, two hundred thousand, three hundred ninety-three".