404221031323 has 4 divisors (see below), whose sum is σ = 404240131240. Its totient is φ = 404201931408.

The previous prime is 404221031311. The next prime is 404221031363. The reversal of 404221031323 is 323130122404.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404221031323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404221031363) 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, 9518178 + ... + 9560551.

It is an arithmetic number, because the mean of its divisors is an integer number (101060032810).

Almost surely, 2^404221031323 is an apocalyptic number.

404221031323 is a deficient number, since it is larger than the sum of its proper divisors (19099917).

404221031323 is a wasteful number, since it uses less digits than its factorization.

404221031323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19099916.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 404221031323 its reverse (323130122404), we get a palindrome (727351153727).

The spelling of 404221031323 in words is "four hundred four billion, two hundred twenty-one million, thirty-one thousand, three hundred twenty-three".