1323243400 has 24 divisors (see below), whose sum is σ = 3076541370. Its totient is φ = 529297280.

The previous prime is 1323243347. The next prime is 1323243403. The reversal of 1323243400 is 43423231.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 584382276 + 738861124 = 24174^2 + 27182^2 .

It is not an unprimeable number, because it can be changed into a prime (1323243403) 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 5 ways as a sum of consecutive naturals, for example, 3307909 + ... + 3308308.

Almost surely, 2^1323243400 is an apocalyptic number.

1323243400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323243400 is an abundant number, since it is smaller than the sum of its proper divisors (1753297970).

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

1323243400 is a wasteful number, since it uses less digits than its factorization.

1323243400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6616233 (or 6616224 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 1323243400 is about 36376.4126873445. The cubic root of 1323243400 is about 1097.8590312529.

Adding to 1323243400 its reverse (43423231), we get a palindrome (1366666631).

The spelling of 1323243400 in words is "one billion, three hundred twenty-three million, two hundred forty-three thousand, four hundred".