1323320430 has 64 divisors (see below), whose sum is σ = 3247630848. Its totient is φ = 344972160.

The previous prime is 1323320407. The next prime is 1323320437. The reversal of 1323320430 is 340233231.

It is a junction number, because it is equal to n+sod(n) for n = 1323320397 and 1323320406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323320437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 486775 + ... + 489485.

It is an arithmetic number, because the mean of its divisors is an integer number (50744232).

Almost surely, 2^1323320430 is an apocalyptic number.

1323320430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323320430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1623815424).

1323320430 is an abundant number, since it is smaller than the sum of its proper divisors (1924310418).

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

1323320430 is a wasteful number, since it uses less digits than its factorization.

1323320430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 1323320430 is about 36377.4714624313. The cubic root of 1323320430 is about 1097.8803340710.

Adding to 1323320430 its reverse (340233231), we get a palindrome (1663553661).

The spelling of 1323320430 in words is "one billion, three hundred twenty-three million, three hundred twenty thousand, four hundred thirty".