404221031031 has 4 divisors (see below), whose sum is σ = 538961374712. Its totient is φ = 269480687352.

The previous prime is 404221031009. The next prime is 404221031057. The reversal of 404221031031 is 130130122404.

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

It is not a de Polignac number, because 404221031031 - 2⁷ = 404221030903 is a prime.

It is a super-2 number, since 2×404221031031² (a number of 24 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 = 404221030989 and 404221031007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404221033031) 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, 67370171836 + ... + 67370171841.

It is an arithmetic number, because the mean of its divisors is an integer number (134740343678).

Almost surely, 2^404221031031 is an apocalyptic number.

404221031031 is a deficient number, since it is larger than the sum of its proper divisors (134740343681).

404221031031 is a wasteful number, since it uses less digits than its factorization.

404221031031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134740343680.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 404221031031 its reverse (130130122404), we get a palindrome (534351153435).

The spelling of 404221031031 in words is "four hundred four billion, two hundred twenty-one million, thirty-one thousand, thirty-one".