1323275320 has 16 divisors (see below), whose sum is σ = 2977369560. Its totient is φ = 529310112.

The previous prime is 1323275293. The next prime is 1323275323. The reversal of 1323275320 is 235723231.

It is a super-2 number, since 2×1323275320² = 3502115145042204800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323275323) 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 3 ways as a sum of consecutive naturals, for example, 16540902 + ... + 16540981.

Almost surely, 2^1323275320 is an apocalyptic number.

1323275320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323275320 is an abundant number, since it is smaller than the sum of its proper divisors (1654094240).

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

1323275320 is a wasteful number, since it uses less digits than its factorization.

1323275320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33081894 (or 33081890 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 1323275320 is about 36376.8514305458. The cubic root of 1323275320 is about 1097.8678589003.

Adding to 1323275320 its reverse (235723231), we get a palindrome (1558998551).

The spelling of 1323275320 in words is "one billion, three hundred twenty-three million, two hundred seventy-five thousand, three hundred twenty".