224021431 has 4 divisors (see below), whose sum is σ = 224129664. Its totient is φ = 223913200.

The previous prime is 224021389. The next prime is 224021437. The reversal of 224021431 is 134120422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 224021431 - 2¹³ = 224013239 is a prime.

It is a super-2 number, since 2×224021431² = 100371203094575522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 224021399 and 224021408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224021437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50950 + ... + 55171.

It is an arithmetic number, because the mean of its divisors is an integer number (56032416).

Almost surely, 2^224021431 is an apocalyptic number.

224021431 is a deficient number, since it is larger than the sum of its proper divisors (108233).

224021431 is a wasteful number, since it uses less digits than its factorization.

224021431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108232.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 224021431 is about 14967.3454894313. The cubic root of 224021431 is about 607.3371619534.

Adding to 224021431 its reverse (134120422), we get a palindrome (358141853).

The spelling of 224021431 in words is "two hundred twenty-four million, twenty-one thousand, four hundred thirty-one".