1313543 has 12 divisors (see below), whose sum is σ = 1667592. Its totient is φ = 1023120.

The previous prime is 1313467. The next prime is 1313567. The reversal of 1313543 is 3453131.

It is a happy number.

It is not a de Polignac number, because 1313543 - 2¹⁶ = 1248007 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 (1313443) 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, 680 + ... + 1757.

It is an arithmetic number, because the mean of its divisors is an integer number (138966).

2^1313543 is an apocalyptic number.

1313543 is a deficient number, since it is larger than the sum of its proper divisors (354049).

1313543 is a wasteful number, since it uses less digits than its factorization.

1313543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2462 (or 2455 counting only the distinct ones).

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

The square root of 1313543 is about 1146.0990358603. The cubic root of 1313543 is about 109.5169729672.

Adding to 1313543 its reverse (3453131), we get a palindrome (4766674).

The spelling of 1313543 in words is "one million, three hundred thirteen thousand, five hundred forty-three".