1322813 has 2 divisors, whose sum is σ = 1322814. Its totient is φ = 1322812.

The previous prime is 1322767. The next prime is 1322831. The reversal of 1322813 is 3182231.

Together with next prime (1322831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1194649 + 128164 = 1093^2 + 358^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322813 - 2⁶ = 1322749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1322843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661406 + 661407.

It is an arithmetic number, because the mean of its divisors is an integer number (661407).

2^1322813 is an apocalyptic number.

It is an amenable number.

1322813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322813 is an equidigital number, since it uses as much as digits as its factorization.

1322813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

The square root of 1322813 is about 1150.1360789054. The cubic root of 1322813 is about 109.7739987957.

The spelling of 1322813 in words is "one million, three hundred twenty-two thousand, eight hundred thirteen".