223243865 has 32 divisors (see below), whose sum is σ = 310818816. Its totient is φ = 152570880.

The previous prime is 223243861. The next prime is 223243873. The reversal of 223243865 is 568342322.

It is not a de Polignac number, because 223243865 - 2² = 223243861 is a prime.

It is a super-3 number, since 3×223243865³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223243861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43937 + ... + 48753.

It is an arithmetic number, because the mean of its divisors is an integer number (9713088).

Almost surely, 2^223243865 is an apocalyptic number.

It is an amenable number.

223243865 is a deficient number, since it is larger than the sum of its proper divisors (87574951).

223243865 is a wasteful number, since it uses less digits than its factorization.

223243865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4889.

The product of its digits is 69120, while the sum is 35.

The square root of 223243865 is about 14941.3474961263. The cubic root of 223243865 is about 606.6336694943.

The spelling of 223243865 in words is "two hundred twenty-three million, two hundred forty-three thousand, eight hundred sixty-five".