224640231 has 8 divisors (see below), whose sum is σ = 300714624. Its totient is φ = 149163000.

The previous prime is 224640191. The next prime is 224640233. The reversal of 224640231 is 132046422.

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

It is a de Polignac number, because none of the positive numbers 2^k-224640231 is a prime.

It is a super-2 number, since 2×224640231² = 100926466767466722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224640233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148411 + ... + 149916.

It is an arithmetic number, because the mean of its divisors is an integer number (37589328).

Almost surely, 2^224640231 is an apocalyptic number.

224640231 is a deficient number, since it is larger than the sum of its proper divisors (76074393).

224640231 is a wasteful number, since it uses less digits than its factorization.

224640231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298581.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 224640231 is about 14988.0029023216. The cubic root of 224640231 is about 607.8958506608.

Adding to 224640231 its reverse (132046422), we get a palindrome (356686653).

The spelling of 224640231 in words is "two hundred twenty-four million, six hundred forty thousand, two hundred thirty-one".