11531134516023 has 12 divisors (see below), whose sum is σ = 17272975160168. Its totient is φ = 7687423010520.

The previous prime is 11531134516003. The next prime is 11531134516051. The reversal of 11531134516023 is 32061543113511.

11531134516023 is a `hidden beast` number, since 1 + 1 + 5 + 3 + 1 + 1 + 3 + 45 + 1 + 602 + 3 = 666.

It is not a de Polignac number, because 11531134516023 - 2⁶ = 11531134515959 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 (11531134516003) 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, 23726613988 + ... + 23726614473.

Almost surely, 2^{11531134516023} is an apocalyptic number.

11531134516023 is a deficient number, since it is larger than the sum of its proper divisors (5741840644145).

11531134516023 is an frugal number, since it uses more digits than its factorization.

11531134516023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47453228476 (or 47453228464 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

Adding to 11531134516023 its reverse (32061543113511), we get a palindrome (43592677629534).

The spelling of 11531134516023 in words is "eleven trillion, five hundred thirty-one billion, one hundred thirty-four million, five hundred sixteen thousand, twenty-three".