1323199873 has 2 divisors, whose sum is σ = 1323199874. Its totient is φ = 1323199872.

The previous prime is 1323199853. The next prime is 1323199921. The reversal of 1323199873 is 3789913231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 678446209 + 644753664 = 26047^2 + 25392^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323199873 - 2²¹ = 1321102721 is a prime.

It is a super-2 number, since 2×1323199873² = 3501715807814432258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1323199853) 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, 661599936 + 661599937.

It is an arithmetic number, because the mean of its divisors is an integer number (661599937).

Almost surely, 2^1323199873 is an apocalyptic number.

It is an amenable number.

1323199873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323199873 is an equidigital number, since it uses as much as digits as its factorization.

1323199873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 1323199873 is about 36375.8143963816. The cubic root of 1323199873 is about 1097.8469933985.

The spelling of 1323199873 in words is "one billion, three hundred twenty-three million, one hundred ninety-nine thousand, eight hundred seventy-three".