404261020231 has 4 divisors (see below), whose sum is σ = 421837586352. Its totient is φ = 386684454112.

The previous prime is 404261020217. The next prime is 404261020253. The reversal of 404261020231 is 132020162404.

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 404261020231 - 2⁹ = 404261019719 is a prime.

It is a super-2 number, since 2×404261020231² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 404261020196 and 404261020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404261020271) 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, 8788283026 + ... + 8788283071.

It is an arithmetic number, because the mean of its divisors is an integer number (105459396588).

Almost surely, 2^404261020231 is an apocalyptic number.

404261020231 is a deficient number, since it is larger than the sum of its proper divisors (17576566121).

404261020231 is a wasteful number, since it uses less digits than its factorization.

404261020231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17576566120.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 404261020231 its reverse (132020162404), we get a palindrome (536281182635).

The spelling of 404261020231 in words is "four hundred four billion, two hundred sixty-one million, twenty thousand, two hundred thirty-one".