11556332231 has 8 divisors (see below), whose sum is σ = 11673008928. Its totient is φ = 11439700000.

The previous prime is 11556332191. The next prime is 11556332279. The reversal of 11556332231 is 13223365511.

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 11556332231 - 2⁶ = 11556332167 is a prime.

It is a super-2 number, since 2×11556332231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11556332731) 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, 824381 + ... + 838281.

It is an arithmetic number, because the mean of its divisors is an integer number (1459126116).

Almost surely, 2^11556332231 is an apocalyptic number.

11556332231 is a deficient number, since it is larger than the sum of its proper divisors (116676697).

11556332231 is a wasteful number, since it uses less digits than its factorization.

11556332231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22233.

The product of its digits is 16200, while the sum is 32.

Adding to 11556332231 its reverse (13223365511), we get a palindrome (24779697742).

The spelling of 11556332231 in words is "eleven billion, five hundred fifty-six million, three hundred thirty-two thousand, two hundred thirty-one".