1321423003 has 8 divisors (see below), whose sum is σ = 1328231520. Its totient is φ = 1314625920.

The previous prime is 1321422983. The next prime is 1321423009. The reversal of 1321423003 is 3003241231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321423003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321423009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315801 + ... + 319957.

It is an arithmetic number, because the mean of its divisors is an integer number (166028940).

Almost surely, 2^1321423003 is an apocalyptic number.

1321423003 is a deficient number, since it is larger than the sum of its proper divisors (6808517).

1321423003 is a wasteful number, since it uses less digits than its factorization.

1321423003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5717.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1321423003 is about 36351.3824083762. The cubic root of 1321423003 is about 1097.3553555983.

Adding to 1321423003 its reverse (3003241231), we get a palindrome (4324664234).

The spelling of 1321423003 in words is "one billion, three hundred twenty-one million, four hundred twenty-three thousand, three".