224031021 has 8 divisors (see below), whose sum is σ = 300435360. Its totient is φ = 148490352.

The previous prime is 224031019. The next prime is 224031107. The reversal of 224031021 is 120130422.

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

It is not a de Polignac number, because 224031021 - 2¹ = 224031019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224031221) 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, 215311 + ... + 216348.

It is an arithmetic number, because the mean of its divisors is an integer number (37554420).

Almost surely, 2^224031021 is an apocalyptic number.

It is an amenable number.

224031021 is a deficient number, since it is larger than the sum of its proper divisors (76404339).

224031021 is a wasteful number, since it uses less digits than its factorization.

224031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431835.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 224031021 is about 14967.6658500917. The cubic root of 224031021 is about 607.3458282080.

Adding to 224031021 its reverse (120130422), we get a palindrome (344161443).

The spelling of 224031021 in words is "two hundred twenty-four million, thirty-one thousand, twenty-one".