1322312003 has 4 divisors (see below), whose sum is σ = 1400095080. Its totient is φ = 1244528928.

The previous prime is 1322311993. The next prime is 1322312059. The reversal of 1322312003 is 3002132231.

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

It is not a de Polignac number, because 1322312003 - 2⁸ = 1322311747 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 77783059 = 1322312003 / (1 + 3 + 2 + 2 + 3 + 1 + 2 + 0 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1322312063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38891513 + ... + 38891546.

It is an arithmetic number, because the mean of its divisors is an integer number (350023770).

Almost surely, 2^1322312003 is an apocalyptic number.

1322312003 is a deficient number, since it is larger than the sum of its proper divisors (77783077).

1322312003 is an equidigital number, since it uses as much as digits as its factorization.

1322312003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77783076.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1322312003 is about 36363.6082230573. The cubic root of 1322312003 is about 1097.6013858805.

Adding to 1322312003 its reverse (3002132231), we get a palindrome (4324444234).

The spelling of 1322312003 in words is "one billion, three hundred twenty-two million, three hundred twelve thousand, three".