1323685507 has 4 divisors (see below), whose sum is σ = 1325866816. Its totient is φ = 1321504200.

The previous prime is 1323685481. The next prime is 1323685513. The reversal of 1323685507 is 7055863231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1323685507 - 2²⁷ = 1189467779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1323685507.

It is not an unprimeable number, because it can be changed into a prime (1323685607) 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, 1089744 + ... + 1090957.

It is an arithmetic number, because the mean of its divisors is an integer number (331466704).

Almost surely, 2^1323685507 is an apocalyptic number.

1323685507 is a deficient number, since it is larger than the sum of its proper divisors (2181309).

1323685507 is an equidigital number, since it uses as much as digits as its factorization.

1323685507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181308.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 1323685507 is about 36382.4890160088. The cubic root of 1323685507 is about 1097.9812856865.

The spelling of 1323685507 in words is "one billion, three hundred twenty-three million, six hundred eighty-five thousand, five hundred seven".