1323403040 has 48 divisors (see below), whose sum is σ = 3179554560. Its totient is φ = 520385280.

The previous prime is 1323403021. The next prime is 1323403061. The reversal of 1323403040 is 403043231.

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, 60656 + ... + 79535.

It is an arithmetic number, because the mean of its divisors is an integer number (66240720).

Almost surely, 2^1323403040 is an apocalyptic number.

1323403040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323403040 is an abundant number, since it is smaller than the sum of its proper divisors (1856151520).

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

1323403040 is a wasteful number, since it uses less digits than its factorization.

1323403040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140265 (or 140257 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 1323403040 is about 36378.6069002099. The cubic root of 1323403040 is about 1097.9031791318.

Adding to 1323403040 its reverse (403043231), we get a palindrome (1726446271).

The spelling of 1323403040 in words is "one billion, three hundred twenty-three million, four hundred three thousand, forty".