1310430503 has 4 divisors (see below), whose sum is σ = 1312618800. Its totient is φ = 1308242208.

The previous prime is 1310430493. The next prime is 1310430509. The reversal of 1310430503 is 3050340131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3050340131 = 55117 ⋅55343.

It is a cyclic number.

It is not a de Polignac number, because 1310430503 - 2⁶ = 1310430439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310430509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1093250 + ... + 1094447.

It is an arithmetic number, because the mean of its divisors is an integer number (328154700).

Almost surely, 2^1310430503 is an apocalyptic number.

1310430503 is a deficient number, since it is larger than the sum of its proper divisors (2188297).

1310430503 is an equidigital number, since it uses as much as digits as its factorization.

1310430503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188296.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 1310430503 is about 36199.8688257292. The cubic root of 1310430503 is about 1094.3040281783.

Adding to 1310430503 its reverse (3050340131), we get a palindrome (4360770634).

The spelling of 1310430503 in words is "one billion, three hundred ten million, four hundred thirty thousand, five hundred three".