1331245003 has 4 divisors (see below), whose sum is σ = 1452267288. Its totient is φ = 1210222720.

The previous prime is 1331244983. The next prime is 1331245049. The reversal of 1331245003 is 3005421331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331245003 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331245063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60511126 + ... + 60511147.

It is an arithmetic number, because the mean of its divisors is an integer number (363066822).

Almost surely, 2^1331245003 is an apocalyptic number.

1331245003 is a deficient number, since it is larger than the sum of its proper divisors (121022285).

1331245003 is a wasteful number, since it uses less digits than its factorization.

1331245003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121022284.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1331245003 is about 36486.2303204921. The cubic root of 1331245003 is about 1100.0674897985.

Adding to 1331245003 its reverse (3005421331), we get a palindrome (4336666334).

The spelling of 1331245003 in words is "one billion, three hundred thirty-one million, two hundred forty-five thousand, three".