11626111231 has 16 divisors (see below), whose sum is σ = 13868112384. Its totient is φ = 9529606944.

The previous prime is 11626111201. The next prime is 11626111253. The reversal of 11626111231 is 13211162611.

It is a cyclic number.

It is not a de Polignac number, because 11626111231 - 2¹³ = 11626103039 is a prime.

It is a super-2 number, since 2×11626111231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11626111196 and 11626111205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11626111201) 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, 986385 + ... + 998101.

It is an arithmetic number, because the mean of its divisors is an integer number (866757024).

Almost surely, 2^11626111231 is an apocalyptic number.

11626111231 is a deficient number, since it is larger than the sum of its proper divisors (2242001153).

11626111231 is a wasteful number, since it uses less digits than its factorization.

11626111231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17910.

The product of its digits is 432, while the sum is 25.

Adding to 11626111231 its reverse (13211162611), we get a palindrome (24837273842).

The spelling of 11626111231 in words is "eleven billion, six hundred twenty-six million, one hundred eleven thousand, two hundred thirty-one".