321300021423 has 4 divisors (see below), whose sum is σ = 428400028568. Its totient is φ = 214200014280.

The previous prime is 321300021421. The next prime is 321300021457. The reversal of 321300021423 is 324120003123.

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

It is not a de Polignac number, because 321300021423 - 2¹ = 321300021421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 321300021423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321300021421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53550003568 + ... + 53550003573.

It is an arithmetic number, because the mean of its divisors is an integer number (107100007142).

Almost surely, 2^321300021423 is an apocalyptic number.

321300021423 is a deficient number, since it is larger than the sum of its proper divisors (107100007145).

321300021423 is a wasteful number, since it uses less digits than its factorization.

321300021423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107100007144.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 321300021423 its reverse (324120003123), we get a palindrome (645420024546).

The spelling of 321300021423 in words is "three hundred twenty-one billion, three hundred million, twenty-one thousand, four hundred twenty-three".