221440431343 has 8 divisors (see below), whose sum is σ = 231080610816. Its totient is φ = 211801279800.

The previous prime is 221440431341. The next prime is 221440431379. The reversal of 221440431343 is 343134044122.

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

It is a cyclic number.

It is not a de Polignac number, because 221440431343 - 2¹ = 221440431341 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 (221440431341) 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, 200598 + ... + 695068.

It is an arithmetic number, because the mean of its divisors is an integer number (28885076352).

Almost surely, 2^221440431343 is an apocalyptic number.

221440431343 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

221440431343 is a deficient number, since it is larger than the sum of its proper divisors (9640179473).

221440431343 is a wasteful number, since it uses less digits than its factorization.

221440431343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513965.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 221440431343 its reverse (343134044122), we get a palindrome (564574475465).

The spelling of 221440431343 in words is "two hundred twenty-one billion, four hundred forty million, four hundred thirty-one thousand, three hundred forty-three".