1331457503 has 2 divisors, whose sum is σ = 1331457504. Its totient is φ = 1331457502.

The previous prime is 1331457481. The next prime is 1331457559. The reversal of 1331457503 is 3057541331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1331457503 - 2¹⁶ = 1331391967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1331457503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331457103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665728751 + 665728752.

It is an arithmetic number, because the mean of its divisors is an integer number (665728752).

Almost surely, 2^1331457503 is an apocalyptic number.

1331457503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331457503 is an equidigital number, since it uses as much as digits as its factorization.

1331457503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 1331457503 is about 36489.1422617743. The cubic root of 1331457503 is about 1100.1260194466.

Adding to 1331457503 its reverse (3057541331), we get a palindrome (4388998834).

The spelling of 1331457503 in words is "one billion, three hundred thirty-one million, four hundred fifty-seven thousand, five hundred three".