404440212120331 has 4 divisors (see below), whose sum is σ = 404440461196200. Its totient is φ = 404439963044464.

The previous prime is 404440212120311. The next prime is 404440212120389. The reversal of 404440212120331 is 133021212044404.

It is a happy number.

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 404440212120331 - 2⁵ = 404440212120299 is a prime.

It is a super-2 number, since 2×404440212120331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404440212120293 and 404440212120302.

It is not an unprimeable number, because it can be changed into a prime (404440212120311) 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, 122086201 + ... + 125355178.

It is an arithmetic number, because the mean of its divisors is an integer number (101110115299050).

Almost surely, 2^{404440212120331} is an apocalyptic number.

404440212120331 is a deficient number, since it is larger than the sum of its proper divisors (249075869).

404440212120331 is a wasteful number, since it uses less digits than its factorization.

404440212120331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249075868.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 404440212120331 its reverse (133021212044404), we get a palindrome (537461424164735).

The spelling of 404440212120331 in words is "four hundred four trillion, four hundred forty billion, two hundred twelve million, one hundred twenty thousand, three hundred thirty-one".