1331455543 has 4 divisors (see below), whose sum is σ = 1452496968. Its totient is φ = 1210414120.

The previous prime is 1331455523. The next prime is 1331455553. The reversal of 1331455543 is 3455541331.

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

It is a cyclic number.

It is not a de Polignac number, because 1331455543 - 2²⁹ = 794584631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331455499 and 1331455508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331455513) 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, 60520696 + ... + 60520717.

It is an arithmetic number, because the mean of its divisors is an integer number (363124242).

Almost surely, 2^1331455543 is an apocalyptic number.

1331455543 is a deficient number, since it is larger than the sum of its proper divisors (121041425).

1331455543 is a wasteful number, since it uses less digits than its factorization.

1331455543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121041424.

The product of its digits is 54000, while the sum is 34.

The square root of 1331455543 is about 36489.1154044600. The cubic root of 1331455543 is about 1100.1254796251.

Adding to 1331455543 its reverse (3455541331), we get a palindrome (4786996874).

The spelling of 1331455543 in words is "one billion, three hundred thirty-one million, four hundred fifty-five thousand, five hundred forty-three".