1323009340 has 24 divisors (see below), whose sum is σ = 2784936672. Its totient is φ = 527943360.

The previous prime is 1323009323. The next prime is 1323009341. The reversal of 1323009340 is 439003231.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323009341) 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 7 ways as a sum of consecutive naturals, for example, 70144 + ... + 86983.

It is an arithmetic number, because the mean of its divisors is an integer number (116039028).

Almost surely, 2^1323009340 is an apocalyptic number.

1323009340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323009340 is an abundant number, since it is smaller than the sum of its proper divisors (1461927332).

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

1323009340 is a wasteful number, since it uses less digits than its factorization.

1323009340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157557 (or 157555 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 1323009340 is about 36373.1953504225. The cubic root of 1323009340 is about 1097.7942963655.

The spelling of 1323009340 in words is "one billion, three hundred twenty-three million, nine thousand, three hundred forty".