223520013 has 16 divisors (see below), whose sum is σ = 341824000. Its totient is φ = 144205920.

The previous prime is 223519937. The next prime is 223520039. The reversal of 223520013 is 310025322.

It is not a de Polignac number, because 223520013 - 2¹² = 223515917 is a prime.

It is a super-2 number, since 2×223520013² = 99922392423040338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223520053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132688 + ... + 134361.

It is an arithmetic number, because the mean of its divisors is an integer number (21364000).

Almost surely, 2^223520013 is an apocalyptic number.

It is an amenable number.

223520013 is a deficient number, since it is larger than the sum of its proper divisors (118303987).

223520013 is a wasteful number, since it uses less digits than its factorization.

223520013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267089 (or 267083 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 223520013 is about 14950.5857075902. The cubic root of 223520013 is about 606.8836974907.

Adding to 223520013 its reverse (310025322), we get a palindrome (533545335).

The spelling of 223520013 in words is "two hundred twenty-three million, five hundred twenty thousand, thirteen".