321220003403 has 8 divisors (see below), whose sum is σ = 351092358288. Its totient is φ = 292085237664.

The previous prime is 321220003367. The next prime is 321220003417. The reversal of 321220003403 is 304300022123.

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 321220003403 - 2¹⁸ = 321219741259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321220009403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184396376 + ... + 184398117.

It is an arithmetic number, because the mean of its divisors is an integer number (43886544786).

Almost surely, 2^321220003403 is an apocalyptic number.

321220003403 is a deficient number, since it is larger than the sum of its proper divisors (29872354885).

321220003403 is a wasteful number, since it uses less digits than its factorization.

321220003403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368794573.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 321220003403 its reverse (304300022123), we get a palindrome (625520025526).

The spelling of 321220003403 in words is "three hundred twenty-one billion, two hundred twenty million, three thousand, four hundred three".