1323507 has 4 divisors (see below), whose sum is σ = 1764680. Its totient is φ = 882336.

The previous prime is 1323503. The next prime is 1323529. The reversal of 1323507 is 7053231.

It is a happy number.

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

It is not a de Polignac number, because 1323507 - 2² = 1323503 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220582 + ... + 220587.

It is an arithmetic number, because the mean of its divisors is an integer number (441170).

2^1323507 is an apocalyptic number.

1323507 is a deficient number, since it is larger than the sum of its proper divisors (441173).

1323507 is an equidigital number, since it uses as much as digits as its factorization.

1323507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441172.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 1323507 is about 1150.4377427745. The cubic root of 1323507 is about 109.7931926994.

Adding to 1323507 its reverse (7053231), we get a palindrome (8376738).

It can be divided in two parts, 1323 and 507, that multiplied together give a square (670761 = 819²).

The spelling of 1323507 in words is "one million, three hundred twenty-three thousand, five hundred seven".