1328620323 has 16 divisors (see below), whose sum is σ = 1851434496. Its totient is φ = 845898240.

The previous prime is 1328620313. The next prime is 1328620339. The reversal of 1328620323 is 3230268231.

It is a de Polignac number, because none of the positive numbers 2^k-1328620323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1328620313) 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, 29763 + ... + 59523.

It is an arithmetic number, because the mean of its divisors is an integer number (115714656).

Almost surely, 2^1328620323 is an apocalyptic number.

1328620323 is a deficient number, since it is larger than the sum of its proper divisors (522814173).

1328620323 is a wasteful number, since it uses less digits than its factorization.

1328620323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30434.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 1328620323 is about 36450.2444847768. The cubic root of 1328620323 is about 1099.3440505213.

Adding to 1328620323 its reverse (3230268231), we get a palindrome (4558888554).

The spelling of 1328620323 in words is "one billion, three hundred twenty-eight million, six hundred twenty thousand, three hundred twenty-three".