224731513 has 4 divisors (see below), whose sum is σ = 226793380. Its totient is φ = 222669648.

The previous prime is 224731499. The next prime is 224731553. The reversal of 224731513 is 315137422.

224731513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 315137422 = 2 ⋅157568711.

It can be written as a sum of positive squares in 2 ways, for example, as 73736569 + 150994944 = 8587^2 + 12288^2 .

It is a cyclic number.

It is not a de Polignac number, because 224731513 - 2²¹ = 222634361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224731553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1030770 + ... + 1030987.

It is an arithmetic number, because the mean of its divisors is an integer number (56698345).

Almost surely, 2^224731513 is an apocalyptic number.

It is an amenable number.

224731513 is a deficient number, since it is larger than the sum of its proper divisors (2061867).

224731513 is a wasteful number, since it uses less digits than its factorization.

224731513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061866.

The product of its digits is 5040, while the sum is 28.

The square root of 224731513 is about 14991.0477619144. The cubic root of 224731513 is about 607.9781785004.

Adding to 224731513 its reverse (315137422), we get a palindrome (539868935).

The spelling of 224731513 in words is "two hundred twenty-four million, seven hundred thirty-one thousand, five hundred thirteen".