1313115503 has 8 divisors (see below), whose sum is σ = 1502825760. Its totient is φ = 1123935840.

The previous prime is 1313115497. The next prime is 1313115691. The reversal of 1313115503 is 3055113131.

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 1313115503 - 2¹⁴ = 1313099119 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 (1313115203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127328 + ... + 137253.

It is an arithmetic number, because the mean of its divisors is an integer number (187853220).

Almost surely, 2^1313115503 is an apocalyptic number.

1313115503 is a deficient number, since it is larger than the sum of its proper divisors (189710257).

1313115503 is an equidigital number, since it uses as much as digits as its factorization.

1313115503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265297.

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 1313115503 is about 36236.9356182335. The cubic root of 1313115503 is about 1095.0509078867.

Adding to 1313115503 its reverse (3055113131), we get a palindrome (4368228634).

The spelling of 1313115503 in words is "one billion, three hundred thirteen million, one hundred fifteen thousand, five hundred three".