223534513 has 12 divisors (see below), whose sum is σ = 239235660. Its totient is φ = 208140800.

The previous prime is 223534481. The next prime is 223534517. The reversal of 223534513 is 315435322.

It can be written as a sum of positive squares in 6 ways, for example, as 137545984 + 85988529 = 11728^2 + 9273^2 .

It is not a de Polignac number, because 223534513 - 2⁵ = 223534481 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223534517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172773 + ... + 174061.

It is an arithmetic number, because the mean of its divisors is an integer number (19936305).

Almost surely, 2^223534513 is an apocalyptic number.

It is an amenable number.

223534513 is a deficient number, since it is larger than the sum of its proper divisors (15701147).

223534513 is a wasteful number, since it uses less digits than its factorization.

223534513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508 (or 1407 counting only the distinct ones).

The product of its digits is 10800, while the sum is 28.

The square root of 223534513 is about 14951.0706305602. The cubic root of 223534513 is about 606.8968202878.

Adding to 223534513 its reverse (315435322), we get a palindrome (538969835).

The spelling of 223534513 in words is "two hundred twenty-three million, five hundred thirty-four thousand, five hundred thirteen".