11113520520231 has 12 divisors (see below), whose sum is σ = 16094776459008. Its totient is φ = 7389668994624.

The previous prime is 11113520520227. The next prime is 11113520520269. The reversal of 11113520520231 is 13202502531111.

11113520520231 is a `hidden beast` number, since 1 + 1 + 1 + 135 + 2 + 0 + 520 + 2 + 3 + 1 = 666.

It is not a de Polignac number, because 11113520520231 - 2² = 11113520520227 is a prime.

It is a super-2 number, since 2×11113520520231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11113520520195 and 11113520520204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11113520525231) 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, 1612053490 + ... + 1612060383.

It is an arithmetic number, because the mean of its divisors is an integer number (1341231371584).

Almost surely, 2^{11113520520231} is an apocalyptic number.

11113520520231 is a deficient number, since it is larger than the sum of its proper divisors (4981255938777).

11113520520231 is a wasteful number, since it uses less digits than its factorization.

11113520520231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224114262 (or 3224114259 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 11113520520231 in words is "eleven trillion, one hundred thirteen billion, five hundred twenty million, five hundred twenty thousand, two hundred thirty-one".