11055643231 has 8 divisors (see below), whose sum is σ = 11092348800. Its totient is φ = 11018961408.

The previous prime is 11055643217. The next prime is 11055643237. The reversal of 11055643231 is 13234655011.

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 11055643231 - 2⁵ = 11055643199 is a prime.

It is a super-2 number, since 2×11055643231² (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 = 11055643193 and 11055643202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11055643237) 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, 1711095 + ... + 1717543.

It is an arithmetic number, because the mean of its divisors is an integer number (1386543600).

Almost surely, 2^11055643231 is an apocalyptic number.

11055643231 is a deficient number, since it is larger than the sum of its proper divisors (36705569).

11055643231 is an equidigital number, since it uses as much as digits as its factorization.

11055643231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11873.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 11055643231 in words is "eleven billion, fifty-five million, six hundred forty-three thousand, two hundred thirty-one".