223503231 has 16 divisors (see below), whose sum is σ = 340876800. Its totient is φ = 127603488.

The previous prime is 223503221. The next prime is 223503253. The reversal of 223503231 is 132305322.

It is not a de Polignac number, because 223503231 - 2²³ = 215114623 is a prime.

It is a super-2 number, since 2×223503231² = 99907388534878722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 223503198 and 223503207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223503221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23665 + ... + 31733.

It is an arithmetic number, because the mean of its divisors is an integer number (21304800).

Almost surely, 2^223503231 is an apocalyptic number.

223503231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

223503231 is a deficient number, since it is larger than the sum of its proper divisors (117373569).

223503231 is a wasteful number, since it uses less digits than its factorization.

223503231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9398.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 223503231 is about 14950.0244481405. The cubic root of 223503231 is about 606.8685087283.

Adding to 223503231 its reverse (132305322), we get a palindrome (355808553).

The spelling of 223503231 in words is "two hundred twenty-three million, five hundred three thousand, two hundred thirty-one".