1312541503 has 32 divisors (see below), whose sum is σ = 1658764800. Its totient is φ = 1010814336.

The previous prime is 1312541497. The next prime is 1312541539. The reversal of 1312541503 is 3051452131.

It is a happy number.

It is not a de Polignac number, because 1312541503 - 2¹⁷ = 1312410431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312541543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1991388 + ... + 1992046.

It is an arithmetic number, because the mean of its divisors is an integer number (51836400).

Almost surely, 2^1312541503 is an apocalyptic number.

1312541503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1312541503 is a deficient number, since it is larger than the sum of its proper divisors (346223297).

1312541503 is a wasteful number, since it uses less digits than its factorization.

1312541503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1312541503 is about 36229.0146567637. The cubic root of 1312541503 is about 1094.8913253699.

Adding to 1312541503 its reverse (3051452131), we get a palindrome (4363993634).

The spelling of 1312541503 in words is "one billion, three hundred twelve million, five hundred forty-one thousand, five hundred three".