1323003281 has 2 divisors, whose sum is σ = 1323003282. Its totient is φ = 1323003280.

The previous prime is 1323003259. The next prime is 1323003349. The reversal of 1323003281 is 1823003231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1141831681 + 181171600 = 33791^2 + 13460^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323003281 - 2¹⁰ = 1323002257 is a prime.

It is a super-2 number, since 2×1323003281² = 3500675363073529922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1323003881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661501640 + 661501641.

It is an arithmetic number, because the mean of its divisors is an integer number (661501641).

Almost surely, 2^1323003281 is an apocalyptic number.

It is an amenable number.

1323003281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323003281 is an equidigital number, since it uses as much as digits as its factorization.

1323003281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1323003281 is about 36373.1120609716. The cubic root of 1323003281 is about 1097.7926205029.

The spelling of 1323003281 in words is "one billion, three hundred twenty-three million, three thousand, two hundred eighty-one".