223111145 has 8 divisors (see below), whose sum is σ = 283482504. Its totient is φ = 167989504.

The previous prime is 223111103. The next prime is 223111153. The reversal of 223111145 is 541111322.

It can be written as a sum of positive squares in 4 ways, for example, as 28815424 + 194295721 = 5368^2 + 13939^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223111145 is a prime.

It is a super-3 number, since 3×223111145³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1312334 + ... + 1312503.

It is an arithmetic number, because the mean of its divisors is an integer number (35435313).

Almost surely, 2^223111145 is an apocalyptic number.

It is an amenable number.

223111145 is a deficient number, since it is larger than the sum of its proper divisors (60371359).

223111145 is a wasteful number, since it uses less digits than its factorization.

223111145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624859.

The product of its digits is 240, while the sum is 20.

The square root of 223111145 is about 14936.9054693400. The cubic root of 223111145 is about 606.5134297124.

Adding to 223111145 its reverse (541111322), we get a palindrome (764222467).

The spelling of 223111145 in words is "two hundred twenty-three million, one hundred eleven thousand, one hundred forty-five".