321440432412203 has 4 divisors (see below), whose sum is σ = 346166619520848. Its totient is φ = 296714245303560.

The previous prime is 321440432412179. The next prime is 321440432412241. The reversal of 321440432412203 is 302214234044123.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 321440432412203 - 2⁶ = 321440432412139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321440432412103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12363093554303 + ... + 12363093554328.

It is an arithmetic number, because the mean of its divisors is an integer number (86541654880212).

Almost surely, 2^{321440432412203} is an apocalyptic number.

321440432412203 is a deficient number, since it is larger than the sum of its proper divisors (24726187108645).

321440432412203 is a wasteful number, since it uses less digits than its factorization.

321440432412203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24726187108644.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 321440432412203 its reverse (302214234044123), we get a palindrome (623654666456326).

The spelling of 321440432412203 in words is "three hundred twenty-one trillion, four hundred forty billion, four hundred thirty-two million, four hundred twelve thousand, two hundred three".