1331343503 has 8 divisors (see below), whose sum is σ = 1523475072. Its totient is φ = 1139696856.

The previous prime is 1331343493. The next prime is 1331343551. The reversal of 1331343503 is 3053431331.

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

It is a cyclic number.

It is not a de Polignac number, because 1331343503 - 2⁴ = 1331343487 is a prime.

It is a super-2 number, since 2×1331343503² = 3544951045960622018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331343203) 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 7 ways as a sum of consecutive naturals, for example, 115325 + ... + 126342.

It is an arithmetic number, because the mean of its divisors is an integer number (190434384).

Almost surely, 2^1331343503 is an apocalyptic number.

1331343503 is a deficient number, since it is larger than the sum of its proper divisors (192131569).

1331343503 is an equidigital number, since it uses as much as digits as its factorization.

1331343503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242461.

The product of its (nonzero) digits is 4860, while the sum is 26.

The square root of 1331343503 is about 36487.5801198161. The cubic root of 1331343503 is about 1100.0946207862.

Adding to 1331343503 its reverse (3053431331), we get a palindrome (4384774834).

The spelling of 1331343503 in words is "one billion, three hundred thirty-one million, three hundred forty-three thousand, five hundred three".