223020523530 has 128 divisors (see below), whose sum is σ = 679814553600. Its totient is φ = 50966148672.

The previous prime is 223020523499. The next prime is 223020523589. The reversal of 223020523530 is 35325020322.

223020523530 is a `hidden beast` number, since 2 + 2 + 302 + 0 + 5 + 2 + 353 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 223020523494 and 223020523503.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 14437551 + ... + 14452989.

It is an arithmetic number, because the mean of its divisors is an integer number (5311051200).

Almost surely, 2^223020523530 is an apocalyptic number.

223020523530 is an abundant number, since it is smaller than the sum of its proper divisors (456794030070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223020523530 is a wasteful number, since it uses less digits than its factorization.

223020523530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23105 (or 23099 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 27.

Adding to 223020523530 its reverse (35325020322), we get a palindrome (258345543852).

The spelling of 223020523530 in words is "two hundred twenty-three billion, twenty million, five hundred twenty-three thousand, five hundred thirty".