321200312117 has 2 divisors, whose sum is σ = 321200312118. Its totient is φ = 321200312116.

The previous prime is 321200312093. The next prime is 321200312123. The reversal of 321200312117 is 711213002123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312138985636 + 9061326481 = 558694^2 + 95191^2 .

It is a cyclic number.

It is not a de Polignac number, because 321200312117 - 2¹² = 321200308021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321200312092 and 321200312101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321200312317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160600156058 + 160600156059.

It is an arithmetic number, because the mean of its divisors is an integer number (160600156059).

Almost surely, 2^321200312117 is an apocalyptic number.

It is an amenable number.

321200312117 is a deficient number, since it is larger than the sum of its proper divisors (1).

321200312117 is an equidigital number, since it uses as much as digits as its factorization.

321200312117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The spelling of 321200312117 in words is "three hundred twenty-one billion, two hundred million, three hundred twelve thousand, one hundred seventeen".