323405123421 has 8 divisors (see below), whose sum is σ = 433699356960. Its totient is φ = 214357152752.

The previous prime is 323405123387. The next prime is 323405123467. The reversal of 323405123421 is 124321504323.

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 323405123421 - 2¹⁸ = 323404861277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323405123471) 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, 311565111 + ... + 311566148.

It is an arithmetic number, because the mean of its divisors is an integer number (54212419620).

Almost surely, 2^323405123421 is an apocalyptic number.

It is an amenable number.

323405123421 is a deficient number, since it is larger than the sum of its proper divisors (110294233539).

323405123421 is a wasteful number, since it uses less digits than its factorization.

323405123421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623131435.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 323405123421 its reverse (124321504323), we get a palindrome (447726627744).

The spelling of 323405123421 in words is "three hundred twenty-three billion, four hundred five million, one hundred twenty-three thousand, four hundred twenty-one".