321327133 has 2 divisors, whose sum is σ = 321327134. Its totient is φ = 321327132.

The previous prime is 321327103. The next prime is 321327151. The reversal of 321327133 is 331723123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293162884 + 28164249 = 17122^2 + 5307^2 .

It is an emirp because it is prime and its reverse (331723123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321327133 - 2⁵ = 321327101 is a prime.

It is a super-2 number, since 2×321327133² = 206502252803999378, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321327098 and 321327107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321327103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160663566 + 160663567.

It is an arithmetic number, because the mean of its divisors is an integer number (160663567).

Almost surely, 2^321327133 is an apocalyptic number.

It is an amenable number.

321327133 is a deficient number, since it is larger than the sum of its proper divisors (1).

321327133 is an equidigital number, since it uses as much as digits as its factorization.

321327133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 25.

The square root of 321327133 is about 17925.5999341724. The cubic root of 321327133 is about 684.9346434528.

The spelling of 321327133 in words is "three hundred twenty-one million, three hundred twenty-seven thousand, one hundred thirty-three".