224131145 has 24 divisors (see below), whose sum is σ = 331278984. Its totient is φ = 144646656.

The previous prime is 224131121. The next prime is 224131157. The reversal of 224131145 is 541131422.

224131145 = 3623² + 3624² + ... + 3639².

It can be written as a sum of positive squares in 4 ways, for example, as 51681721 + 172449424 = 7189^2 + 13132^2 .

It is not a de Polignac number, because 224131145 - 2²⁰ = 223082569 is a prime.

It is a super-2 number, since 2×224131145² = 100469540318022050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 224131145.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22742 + ... + 31071.

It is an arithmetic number, because the mean of its divisors is an integer number (13803291).

Almost surely, 2^224131145 is an apocalyptic number.

It is an amenable number.

224131145 is a deficient number, since it is larger than the sum of its proper divisors (107147839).

224131145 is a wasteful number, since it uses less digits than its factorization.

224131145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53849 (or 53842 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 224131145 is about 14971.0101529590. The cubic root of 224131145 is about 607.4362931157.

Adding to 224131145 its reverse (541131422), we get a palindrome (765262567).

The spelling of 224131145 in words is "two hundred twenty-four million, one hundred thirty-one thousand, one hundred forty-five".