11303021543 has 4 divisors (see below), whose sum is σ = 12330568968. Its totient is φ = 10275474120.

The previous prime is 11303021531. The next prime is 11303021567. The reversal of 11303021543 is 34512030311.

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 11303021543 - 2¹² = 11303017447 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 (11303011543) 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, 513773696 + ... + 513773717.

It is an arithmetic number, because the mean of its divisors is an integer number (3082642242).

Almost surely, 2^11303021543 is an apocalyptic number.

11303021543 is a deficient number, since it is larger than the sum of its proper divisors (1027547425).

11303021543 is a wasteful number, since it uses less digits than its factorization.

11303021543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027547424.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 11303021543 its reverse (34512030311), we get a palindrome (45815051854).

The spelling of 11303021543 in words is "eleven billion, three hundred three million, twenty-one thousand, five hundred forty-three".