223111232231 has 4 divisors (see below), whose sum is σ = 226892778600. Its totient is φ = 219329685864.

The previous prime is 223111232209. The next prime is 223111232233. The reversal of 223111232231 is 132232111322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132232111322 = 2 ⋅66116055661.

It is a cyclic number.

It is not a de Polignac number, because 223111232231 - 2⁶ = 223111232167 is a prime.

It is a super-3 number, since 3×223111232231³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223111232197 and 223111232206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223111232233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1890773096 + ... + 1890773213.

It is an arithmetic number, because the mean of its divisors is an integer number (56723194650).

Almost surely, 2^223111232231 is an apocalyptic number.

223111232231 is a deficient number, since it is larger than the sum of its proper divisors (3781546369).

223111232231 is an equidigital number, since it uses as much as digits as its factorization.

223111232231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3781546368.

The product of its digits is 864, while the sum is 23.

Adding to 223111232231 its reverse (132232111322), we get a palindrome (355343343553).

The spelling of 223111232231 in words is "two hundred twenty-three billion, one hundred eleven million, two hundred thirty-two thousand, two hundred thirty-one".