1321322413 has 2 divisors, whose sum is σ = 1321322414. Its totient is φ = 1321322412.

The previous prime is 1321322407. The next prime is 1321322417. The reversal of 1321322413 is 3142231231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1135218249 + 186104164 = 33693^2 + 13642^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321322413 - 2¹⁷ = 1321191341 is a prime.

It is a super-2 number, since 2×1321322413² = 3491785838192285138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321322417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660661206 + 660661207.

It is an arithmetic number, because the mean of its divisors is an integer number (660661207).

Almost surely, 2^1321322413 is an apocalyptic number.

It is an amenable number.

1321322413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321322413 is an equidigital number, since it uses as much as digits as its factorization.

1321322413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 22.

The square root of 1321322413 is about 36349.9988033012. The cubic root of 1321322413 is about 1097.3275104203.

Adding to 1321322413 its reverse (3142231231), we get a palindrome (4463553644).

The spelling of 1321322413 in words is "one billion, three hundred twenty-one million, three hundred twenty-two thousand, four hundred thirteen".