1331223503 has 2 divisors, whose sum is σ = 1331223504. Its totient is φ = 1331223502.

The previous prime is 1331223499. The next prime is 1331223559. The reversal of 1331223503 is 3053221331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1331223503 - 2² = 1331223499 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331223563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665611751 + 665611752.

It is an arithmetic number, because the mean of its divisors is an integer number (665611752).

Almost surely, 2^1331223503 is an apocalyptic number.

1331223503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331223503 is an equidigital number, since it uses as much as digits as its factorization.

1331223503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 1331223503 is about 36485.9356876043. The cubic root of 1331223503 is about 1100.0615676283.

Adding to 1331223503 its reverse (3053221331), we get a palindrome (4384444834).

The spelling of 1331223503 in words is "one billion, three hundred thirty-one million, two hundred twenty-three thousand, five hundred three".