1323523140 has 24 divisors (see below), whose sum is σ = 3705864960. Its totient is φ = 352939488.

The previous prime is 1323523139. The next prime is 1323523153. The reversal of 1323523140 is 413253231.

It is a self number, because there is not a number n which added to its sum of digits gives 1323523140.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11029300 + ... + 11029419.

It is an arithmetic number, because the mean of its divisors is an integer number (154411040).

Almost surely, 2^1323523140 is an apocalyptic number.

1323523140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323523140 is an abundant number, since it is smaller than the sum of its proper divisors (2382341820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1323523140 is a wasteful number, since it uses less digits than its factorization.

1323523140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22058731 (or 22058729 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1323523140 is about 36380.2575581867. The cubic root of 1323523140 is about 1097.9363900230.

Adding to 1323523140 its reverse (413253231), we get a palindrome (1736776371).

The spelling of 1323523140 in words is "one billion, three hundred twenty-three million, five hundred twenty-three thousand, one hundred forty".