404143431 has 16 divisors (see below), whose sum is σ = 578596608. Its totient is φ = 250006400.

The previous prime is 404143427. The next prime is 404143457. The reversal of 404143431 is 134341404.

It is a cyclic number.

It is not a de Polignac number, because 404143431 - 2² = 404143427 is a prime.

It is a super-2 number, since 2×404143431² = 326663825640903522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404143331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52185 + ... + 59426.

It is an arithmetic number, because the mean of its divisors is an integer number (36162288).

Almost surely, 2^404143431 is an apocalyptic number.

404143431 is a deficient number, since it is larger than the sum of its proper divisors (174453177).

404143431 is a wasteful number, since it uses less digits than its factorization.

404143431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111702.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 404143431 is about 20103.3189050962. The cubic root of 404143431 is about 739.3416539408.

Adding to 404143431 its reverse (134341404), we get a palindrome (538484835).

The spelling of 404143431 in words is "four hundred four million, one hundred forty-three thousand, four hundred thirty-one".