11101311231 has 8 divisors (see below), whose sum is σ = 14804386560. Its totient is φ = 7399555032.

The previous prime is 11101311229. The next prime is 11101311251. The reversal of 11101311231 is 13211310111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11101311231 - 2¹ = 11101311229 is a prime.

It is a super-2 number, since 2×11101311231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11101311231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101311211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309975 + ... + 343928.

It is an arithmetic number, because the mean of its divisors is an integer number (1850548320).

Almost surely, 2^11101311231 is an apocalyptic number.

11101311231 is a deficient number, since it is larger than the sum of its proper divisors (3703075329).

11101311231 is an equidigital number, since it uses as much as digits as its factorization.

11101311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659565.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 11101311231 its reverse (13211310111), we get a palindrome (24312621342).

The spelling of 11101311231 in words is "eleven billion, one hundred one million, three hundred eleven thousand, two hundred thirty-one".