223011231 has 8 divisors (see below), whose sum is σ = 297501360. Its totient is φ = 148597632.

The previous prime is 223011211. The next prime is 223011311. The reversal of 223011231 is 132110322.

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

It is not a de Polignac number, because 223011231 - 2⁵ = 223011199 is a prime.

It is a super-2 number, since 2×223011231² = 99468018304270722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223011231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223011211) 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, 11946 + ... + 24263.

It is an arithmetic number, because the mean of its divisors is an integer number (37187670).

Almost surely, 2^223011231 is an apocalyptic number.

223011231 is a deficient number, since it is larger than the sum of its proper divisors (74490129).

223011231 is a wasteful number, since it uses less digits than its factorization.

223011231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38265.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 223011231 is about 14933.5605600272. The cubic root of 223011231 is about 606.4228795803.

Adding to 223011231 its reverse (132110322), we get a palindrome (355121553).

Subtracting from 223011231 its reverse (132110322), we obtain a palindrome (90900909).

It can be divided in two parts, 22301 and 1231, that added together give a palindrome (23532).

The spelling of 223011231 in words is "two hundred twenty-three million, eleven thousand, two hundred thirty-one".