1310311503 has 12 divisors (see below), whose sum is σ = 1953726528. Its totient is φ = 845362080.

The previous prime is 1310311487. The next prime is 1310311507. The reversal of 1310311503 is 3051130131.

1310311503 is a `hidden beast` number, since 131 + 0 + 31 + 1 + 503 = 666.

It is not a de Polignac number, because 1310311503 - 2⁴ = 1310311487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310311507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2347950 + ... + 2348507.

It is an arithmetic number, because the mean of its divisors is an integer number (162810544).

Almost surely, 2^1310311503 is an apocalyptic number.

1310311503 is a deficient number, since it is larger than the sum of its proper divisors (643415025).

1310311503 is a wasteful number, since it uses less digits than its factorization.

1310311503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4696494 (or 4696491 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The square root of 1310311503 is about 36198.2251360478. The cubic root of 1310311503 is about 1094.2709026466.

Adding to 1310311503 its reverse (3051130131), we get a palindrome (4361441634).

The spelling of 1310311503 in words is "one billion, three hundred ten million, three hundred eleven thousand, five hundred three".