1316543143 has 4 divisors (see below), whose sum is σ = 1318591288. Its totient is φ = 1314495000.

The previous prime is 1316543141. The next prime is 1316543147. The reversal of 1316543143 is 3413456131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3413456131 = 48197 ⋅70823.

It is a cyclic number.

It is not a de Polignac number, because 1316543143 - 2¹ = 1316543141 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 (1316543141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1023108 + ... + 1024393.

It is an arithmetic number, because the mean of its divisors is an integer number (329647822).

Almost surely, 2^1316543143 is an apocalyptic number.

1316543143 is a deficient number, since it is larger than the sum of its proper divisors (2048145).

1316543143 is an equidigital number, since it uses as much as digits as its factorization.

1316543143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048144.

The product of its digits is 12960, while the sum is 31.

The square root of 1316543143 is about 36284.1996328981. The cubic root of 1316543143 is about 1096.0028878993.

Adding to 1316543143 its reverse (3413456131), we get a palindrome (4729999274).

The spelling of 1316543143 in words is "one billion, three hundred sixteen million, five hundred forty-three thousand, one hundred forty-three".