1323313040 has 40 divisors (see below), whose sum is σ = 3516233280. Its totient is φ = 453707136.

The previous prime is 1323312967. The next prime is 1323313067. The reversal of 1323313040 is 403133231.

It is a tau number, because it is divible by the number of its divisors (40).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1180970 + ... + 1182089.

It is an arithmetic number, because the mean of its divisors is an integer number (87905832).

Almost surely, 2^1323313040 is an apocalyptic number.

1323313040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323313040 is an abundant number, since it is smaller than the sum of its proper divisors (2192920240).

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

1323313040 is a wasteful number, since it uses less digits than its factorization.

1323313040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363079 (or 2363073 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1323313040 is about 36377.3698884348. The cubic root of 1323313040 is about 1097.8782903858.

Adding to 1323313040 its reverse (403133231), we get a palindrome (1726446271).

The spelling of 1323313040 in words is "one billion, three hundred twenty-three million, three hundred thirteen thousand, forty".