1323123255 has 40 divisors (see below), whose sum is σ = 2375553312. Its totient is φ = 704555712.

The previous prime is 1323123251. The next prime is 1323123301. The reversal of 1323123255 is 5523213231.

It is a happy number.

1323123255 is a `hidden beast` number, since 1 + 323 + 12 + 325 + 5 = 666.

It is not a de Polignac number, because 1323123255 - 2² = 1323123251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323123251) 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 in 39 ways as a sum of consecutive naturals, for example, 298717 + ... + 303113.

Almost surely, 2^1323123255 is an apocalyptic number.

1323123255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1323123255 is a deficient number, since it is larger than the sum of its proper divisors (1052430057).

1323123255 is an equidigital number, since it uses as much as digits as its factorization.

1323123255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5157 (or 5148 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 1323123255 is about 36374.7612363298. The cubic root of 1323123255 is about 1097.8258032351.

Adding to 1323123255 its reverse (5523213231), we get a palindrome (6846336486).

The spelling of 1323123255 in words is "one billion, three hundred twenty-three million, one hundred twenty-three thousand, two hundred fifty-five".