1322312813 has 2 divisors, whose sum is σ = 1322312814. Its totient is φ = 1322312812.

The previous prime is 1322312807. The next prime is 1322312851. The reversal of 1322312813 is 3182132231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1287230884 + 35081929 = 35878^2 + 5923^2 .

It is an emirp because it is prime and its reverse (3182132231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1322312813 - 2⁶ = 1322312749 is a prime.

It is a super-2 number, since 2×1322312813² = 3497022350847945938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1322312213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661156406 + 661156407.

It is an arithmetic number, because the mean of its divisors is an integer number (661156407).

Almost surely, 2^1322312813 is an apocalyptic number.

It is an amenable number.

1322312813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322312813 is an equidigital number, since it uses as much as digits as its factorization.

1322312813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 1322312813 is about 36363.6193605642. The cubic root of 1322312813 is about 1097.6016099972.

The spelling of 1322312813 in words is "one billion, three hundred twenty-two million, three hundred twelve thousand, eight hundred thirteen".