223320442431 has 4 divisors (see below), whose sum is σ = 297760589912. Its totient is φ = 148880294952.

The previous prime is 223320442391. The next prime is 223320442451. The reversal of 223320442431 is 134244023322.

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

It is not a de Polignac number, because 223320442431 - 2⁹ = 223320441919 is a prime.

It is a super-2 number, since 2×223320442431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223320442451) 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, 37220073736 + ... + 37220073741.

It is an arithmetic number, because the mean of its divisors is an integer number (74440147478).

Almost surely, 2^223320442431 is an apocalyptic number.

223320442431 is a deficient number, since it is larger than the sum of its proper divisors (74440147481).

223320442431 is an equidigital number, since it uses as much as digits as its factorization.

223320442431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74440147480.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 223320442431 its reverse (134244023322), we get a palindrome (357564465753).

The spelling of 223320442431 in words is "two hundred twenty-three billion, three hundred twenty million, four hundred forty-two thousand, four hundred thirty-one".