11031115200523 has 4 divisors (see below), whose sum is σ = 12033943855128. Its totient is φ = 10028286545920.

The previous prime is 11031115200509. The next prime is 11031115200569. The reversal of 11031115200523 is 32500251113011.

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-11031115200523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11031115230523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501414327286 + ... + 501414327307.

It is an arithmetic number, because the mean of its divisors is an integer number (3008485963782).

Almost surely, 2^{11031115200523} is an apocalyptic number.

11031115200523 is a deficient number, since it is larger than the sum of its proper divisors (1002828654605).

11031115200523 is a wasteful number, since it uses less digits than its factorization.

11031115200523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002828654604.

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 11031115200523 its reverse (32500251113011), we get a palindrome (43531366313534).

The spelling of 11031115200523 in words is "eleven trillion, thirty-one billion, one hundred fifteen million, two hundred thousand, five hundred twenty-three".