221431432223 has 8 divisors (see below), whose sum is σ = 224162161776. Its totient is φ = 218702200000.

The previous prime is 221431432169. The next prime is 221431432231. The reversal of 221431432223 is 322234134122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221431432223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221431434223) 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, 75278 + ... + 669723.

It is an arithmetic number, because the mean of its divisors is an integer number (28020270222).

Almost surely, 2^221431432223 is an apocalyptic number.

221431432223 is a deficient number, since it is larger than the sum of its proper divisors (2730729553).

221431432223 is an equidigital number, since it uses as much as digits as its factorization.

221431432223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748665.

The product of its digits is 13824, while the sum is 29.

Adding to 221431432223 its reverse (322234134122), we get a palindrome (543665566345).

The spelling of 221431432223 in words is "two hundred twenty-one billion, four hundred thirty-one million, four hundred thirty-two thousand, two hundred twenty-three".