1310231450543 has 4 divisors (see below), whose sum is σ = 1315668095808. Its totient is φ = 1304794805280.

The previous prime is 1310231450537. The next prime is 1310231450579. The reversal of 1310231450543 is 3450541320131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310231450543 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 (1310231450443) 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, 2718322271 + ... + 2718322752.

It is an arithmetic number, because the mean of its divisors is an integer number (328917023952).

Almost surely, 2^{1310231450543} is an apocalyptic number.

1310231450543 is a deficient number, since it is larger than the sum of its proper divisors (5436645265).

1310231450543 is an equidigital number, since it uses as much as digits as its factorization.

1310231450543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5436645264.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 1310231450543 its reverse (3450541320131), we get a palindrome (4760772770674).

The spelling of 1310231450543 in words is "one trillion, three hundred ten billion, two hundred thirty-one million, four hundred fifty thousand, five hundred forty-three".