1323123311 has 8 divisors (see below), whose sum is σ = 1474688880. Its totient is φ = 1179750528.

The previous prime is 1323123301. The next prime is 1323123317. The reversal of 1323123311 is 1133213231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1323123311 - 2¹⁰ = 1323122287 is a prime.

It is a super-2 number, since 2×1323123311² = 3501310592223205442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323123317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2047856 + ... + 2048501.

It is an arithmetic number, because the mean of its divisors is an integer number (184336110).

Almost surely, 2^1323123311 is an apocalyptic number.

1323123311 is a deficient number, since it is larger than the sum of its proper divisors (151565569).

1323123311 is a wasteful number, since it uses less digits than its factorization.

1323123311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4096393.

The product of its digits is 324, while the sum is 20.

The square root of 1323123311 is about 36374.7620060943. The cubic root of 1323123311 is about 1097.8258187233.

Adding to 1323123311 its reverse (1133213231), we get a palindrome (2456336542).

The spelling of 1323123311 in words is "one billion, three hundred twenty-three million, one hundred twenty-three thousand, three hundred eleven".