11541120231 has 16 divisors (see below), whose sum is σ = 15887449088. Its totient is φ = 7444526400.

The previous prime is 11541120209. The next prime is 11541120257. The reversal of 11541120231 is 13202114511.

It is not a de Polignac number, because 11541120231 - 2⁶ = 11541120167 is a prime.

It is a super-2 number, since 2×11541120231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11541120198 and 11541120207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11541120271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 861696 + ... + 874986.

It is an arithmetic number, because the mean of its divisors is an integer number (992965568).

Almost surely, 2^11541120231 is an apocalyptic number.

11541120231 is a deficient number, since it is larger than the sum of its proper divisors (4346328857).

11541120231 is a wasteful number, since it uses less digits than its factorization.

11541120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22662.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 11541120231 its reverse (13202114511), we get a palindrome (24743234742).

The spelling of 11541120231 in words is "eleven billion, five hundred forty-one million, one hundred twenty thousand, two hundred thirty-one".