223513231 has 4 divisors (see below), whose sum is σ = 223543152. Its totient is φ = 223483312.

The previous prime is 223513223. The next prime is 223513253. The reversal of 223513231 is 132315322.

223513231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 132315322 = 2 ⋅66157661.

It is a cyclic number.

It is not a de Polignac number, because 223513231 - 2³ = 223513223 is a prime.

It is a super-2 number, since 2×223513231² = 99916328864118722, which 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 (223514231) 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, 6675 + ... + 22171.

It is an arithmetic number, because the mean of its divisors is an integer number (55885788).

Almost surely, 2^223513231 is an apocalyptic number.

223513231 is a deficient number, since it is larger than the sum of its proper divisors (29921).

223513231 is a wasteful number, since it uses less digits than its factorization.

223513231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29920.

The product of its digits is 1080, while the sum is 22.

The square root of 223513231 is about 14950.3588920133. The cubic root of 223513231 is about 606.8775594469.

Adding to 223513231 its reverse (132315322), we get a palindrome (355828553).

The spelling of 223513231 in words is "two hundred twenty-three million, five hundred thirteen thousand, two hundred thirty-one".