203440223344321 has 8 divisors (see below), whose sum is σ = 212354307299520. Its totient is φ = 194531877460272.

The previous prime is 203440223344271. The next prime is 203440223344331. The reversal of 203440223344321 is 123443322044302.

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

It is not a de Polignac number, because 203440223344321 - 2²³ = 203440214955713 is a prime.

It is a super-2 number, since 2×203440223344321² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203440223344331) 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, 1434445326 + ... + 1434587143.

It is an arithmetic number, because the mean of its divisors is an integer number (26544288412440).

Almost surely, 2^{203440223344321} is an apocalyptic number.

It is an amenable number.

203440223344321 is a deficient number, since it is larger than the sum of its proper divisors (8914083955199).

203440223344321 is a wasteful number, since it uses less digits than its factorization.

203440223344321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2869035575.

The product of its (nonzero) digits is 331776, while the sum is 37.

Adding to 203440223344321 its reverse (123443322044302), we get a palindrome (326883545388623).

The spelling of 203440223344321 in words is "two hundred three trillion, four hundred forty billion, two hundred twenty-three million, three hundred forty-four thousand, three hundred twenty-one".