1313403543 has 12 divisors (see below), whose sum is σ = 1929294120. Its totient is φ = 860761296.

The previous prime is 1313403503. The next prime is 1313403551. The reversal of 1313403543 is 3453043131.

1313403543 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1313403543 - 2²¹ = 1311306391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313403503) 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, 1236196 + ... + 1237257.

It is an arithmetic number, because the mean of its divisors is an integer number (160774510).

Almost surely, 2^1313403543 is an apocalyptic number.

1313403543 is a deficient number, since it is larger than the sum of its proper divisors (615890577).

1313403543 is a wasteful number, since it uses less digits than its factorization.

1313403543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473518 (or 2473515 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 1313403543 is about 36240.9097981825. The cubic root of 1313403543 is about 1095.1309707607.

Adding to 1313403543 its reverse (3453043131), we get a palindrome (4766446674).

The spelling of 1313403543 in words is "one billion, three hundred thirteen million, four hundred three thousand, five hundred forty-three".