223231653 has 8 divisors (see below), whose sum is σ = 330713600. Its totient is φ = 148821084.

The previous prime is 223231609. The next prime is 223231661. The reversal of 223231653 is 356132322.

223231653 is a `hidden beast` number, since 2 + 2 + 3 + 2 + 3 + 1 + 653 = 666.

It is not a de Polignac number, because 223231653 - 2¹⁰ = 223230629 is a prime.

It is a super-3 number, since 3×223231653³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8267839 = 223231653 / (2 + 2 + 3 + 2 + 3 + 1 + 6 + 5 + 3).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223231663) 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, 4133893 + ... + 4133946.

It is an arithmetic number, because the mean of its divisors is an integer number (41339200).

Almost surely, 2^223231653 is an apocalyptic number.

It is an amenable number.

223231653 is a deficient number, since it is larger than the sum of its proper divisors (107481947).

223231653 is an equidigital number, since it uses as much as digits as its factorization.

223231653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8267848 (or 8267842 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 223231653 is about 14940.9388259239. The cubic root of 223231653 is about 606.6226078309.

Adding to 223231653 its reverse (356132322), we get a palindrome (579363975).

The spelling of 223231653 in words is "two hundred twenty-three million, two hundred thirty-one thousand, six hundred fifty-three".