11155214231 has 8 divisors (see below), whose sum is σ = 12752557344. Its totient is φ = 9558806400.

The previous prime is 11155214221. The next prime is 11155214263. The reversal of 11155214231 is 13241255111.

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

It is a cyclic number.

It is not a de Polignac number, because 11155214231 - 2¹⁰ = 11155213207 is a prime.

It is a super-2 number, since 2×11155214231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11155214231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11155214221) 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 7 ways as a sum of consecutive naturals, for example, 208070 + ... + 256131.

It is an arithmetic number, because the mean of its divisors is an integer number (1594069668).

Almost surely, 2^11155214231 is an apocalyptic number.

11155214231 is a deficient number, since it is larger than the sum of its proper divisors (1597343113).

11155214231 is an equidigital number, since it uses as much as digits as its factorization.

11155214231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467641.

The product of its digits is 1200, while the sum is 26.

Adding to 11155214231 its reverse (13241255111), we get a palindrome (24396469342).

The spelling of 11155214231 in words is "eleven billion, one hundred fifty-five million, two hundred fourteen thousand, two hundred thirty-one".