223311231 has 48 divisors (see below), whose sum is σ = 381588480. Its totient is φ = 124061760.

The previous prime is 223311211. The next prime is 223311287. The reversal of 223311231 is 132113322.

It is not a de Polignac number, because 223311231 - 2⁹ = 223310719 is a prime.

It is a super-2 number, since 2×223311231² = 99735811781470722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223311211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 214410 + ... + 215448.

It is an arithmetic number, because the mean of its divisors is an integer number (7949760).

Almost surely, 2^223311231 is an apocalyptic number.

223311231 is a deficient number, since it is larger than the sum of its proper divisors (158277249).

223311231 is a wasteful number, since it uses less digits than its factorization.

223311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236 (or 1233 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 223311231 is about 14943.6016742953. The cubic root of 223311231 is about 606.6946825541.

Adding to 223311231 its reverse (132113322), we get a palindrome (355424553).

The spelling of 223311231 in words is "two hundred twenty-three million, three hundred eleven thousand, two hundred thirty-one".