404743231 has 4 divisors (see below), whose sum is σ = 404808264. Its totient is φ = 404678200.

The previous prime is 404743211. The next prime is 404743237. The reversal of 404743231 is 132347404.

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 404743231 - 2²⁵ = 371188799 is a prime.

It is a super-2 number, since 2×404743231² = 327634166080638722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404743231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404743237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22060 + ... + 36001.

It is an arithmetic number, because the mean of its divisors is an integer number (101202066).

Almost surely, 2^404743231 is an apocalyptic number.

404743231 is a deficient number, since it is larger than the sum of its proper divisors (65033).

404743231 is an equidigital number, since it uses as much as digits as its factorization.

404743231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65032.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 404743231 is about 20118.2313089397. The cubic root of 404743231 is about 739.7072320076.

It can be divided in two parts, 4047 and 43231, that added together give a triangular number (47278 = T₃₀₇).

The spelling of 404743231 in words is "four hundred four million, seven hundred forty-three thousand, two hundred thirty-one".