1323223019 has 2 divisors, whose sum is σ = 1323223020. Its totient is φ = 1323223018.

The previous prime is 1323223001. The next prime is 1323223043. The reversal of 1323223019 is 9103223231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1323223019 - 2²⁸ = 1054787563 is a prime.

It is a super-2 number, since 2×1323223019² = 3501838316022948722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1323225019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661611509 + 661611510.

It is an arithmetic number, because the mean of its divisors is an integer number (661611510).

Almost surely, 2^1323223019 is an apocalyptic number.

1323223019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323223019 is an equidigital number, since it uses as much as digits as its factorization.

1323223019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 1323223019 is about 36376.1325459428. The cubic root of 1323223019 is about 1097.8533947036.

The spelling of 1323223019 in words is "one billion, three hundred twenty-three million, two hundred twenty-three thousand, nineteen".