223143523 has 2 divisors, whose sum is σ = 223143524. Its totient is φ = 223143522.

The previous prime is 223143521. The next prime is 223143527. The reversal of 223143523 is 325341322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223143523 - 2¹ = 223143521 is a prime.

It is a super-3 number, since 3×223143523³ (a number of 26 digits) contains 333 as substring.

Together with 223143521, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (223143521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111571761 + 111571762.

It is an arithmetic number, because the mean of its divisors is an integer number (111571762).

Almost surely, 2^223143523 is an apocalyptic number.

223143523 is a deficient number, since it is larger than the sum of its proper divisors (1).

223143523 is an equidigital number, since it uses as much as digits as its factorization.

223143523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 25.

The square root of 223143523 is about 14937.9892555859. The cubic root of 223143523 is about 606.5427674698.

Adding to 223143523 its reverse (325341322), we get a palindrome (548484845).

It can be divided in two parts, 2231 and 43523, that added together give a palindrome (45754).

The spelling of 223143523 in words is "two hundred twenty-three million, one hundred forty-three thousand, five hundred twenty-three".