224320431 has 4 divisors (see below), whose sum is σ = 299093912. Its totient is φ = 149546952.

The previous prime is 224320429. The next prime is 224320451. The reversal of 224320431 is 134023422.

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

It is not a de Polignac number, because 224320431 - 2¹ = 224320429 is a prime.

It is a super-2 number, since 2×224320431² = 100639311528051522, 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 = 224320398 and 224320407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224320451) 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, 37386736 + ... + 37386741.

It is an arithmetic number, because the mean of its divisors is an integer number (74773478).

Almost surely, 2^224320431 is an apocalyptic number.

224320431 is a deficient number, since it is larger than the sum of its proper divisors (74773481).

224320431 is an equidigital number, since it uses as much as digits as its factorization.

224320431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74773480.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 224320431 is about 14977.3305698980. The cubic root of 224320431 is about 607.6072448643.

Adding to 224320431 its reverse (134023422), we get a palindrome (358343853).

The spelling of 224320431 in words is "two hundred twenty-four million, three hundred twenty thousand, four hundred thirty-one".