404431323 has 4 divisors (see below), whose sum is σ = 539241768. Its totient is φ = 269620880.

The previous prime is 404431277. The next prime is 404431327. The reversal of 404431323 is 323134404.

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 404431323 - 2⁸ = 404431067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404431293 and 404431302.

It is not an unprimeable number, because it can be changed into a prime (404431327) 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, 67405218 + ... + 67405223.

It is an arithmetic number, because the mean of its divisors is an integer number (134810442).

Almost surely, 2^404431323 is an apocalyptic number.

404431323 is a deficient number, since it is larger than the sum of its proper divisors (134810445).

404431323 is a wasteful number, since it uses less digits than its factorization.

404431323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134810444.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 404431323 is about 20110.4779406159. The cubic root of 404431323 is about 739.5171692073.

Adding to 404431323 its reverse (323134404), we get a palindrome (727565727).

The spelling of 404431323 in words is "four hundred four million, four hundred thirty-one thousand, three hundred twenty-three".