1323300440 has 64 divisors (see below), whose sum is σ = 3712124160. Its totient is φ = 412456320.

The previous prime is 1323300427. The next prime is 1323300443. The reversal of 1323300440 is 440033231.

It is a super-2 number, since 2×1323300440² = 3502248109008387200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323300443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211742 + ... + 217901.

It is an arithmetic number, because the mean of its divisors is an integer number (58001940).

Almost surely, 2^1323300440 is an apocalyptic number.

1323300440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323300440 is an abundant number, since it is smaller than the sum of its proper divisors (2388823720).

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

1323300440 is a wasteful number, since it uses less digits than its factorization.

1323300440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429672 (or 429668 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 1323300440 is about 36377.1967034295. The cubic root of 1323300440 is about 1097.8748058714.

Adding to 1323300440 its reverse (440033231), we get a palindrome (1763333671).

The spelling of 1323300440 in words is "one billion, three hundred twenty-three million, three hundred thousand, four hundred forty".