1404221231 has 16 divisors (see below), whose sum is σ = 1676657664. Its totient is φ = 1149872064.

The previous prime is 1404221227. The next prime is 1404221237. The reversal of 1404221231 is 1321224041.

It is a cyclic number.

It is not a de Polignac number, because 1404221231 - 2² = 1404221227 is a prime.

It is a super-2 number, since 2×1404221231² = 3943674531182310722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1404221237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137891 + ... + 147723.

It is an arithmetic number, because the mean of its divisors is an integer number (104791104).

Almost surely, 2^1404221231 is an apocalyptic number.

1404221231 is a deficient number, since it is larger than the sum of its proper divisors (272436433).

1404221231 is an equidigital number, since it uses as much as digits as its factorization.

1404221231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10750.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1404221231 is about 37472.9399834067. The cubic root of 1404221231 is about 1119.8121578577.

Adding to 1404221231 its reverse (1321224041), we get a palindrome (2725445272).

The spelling of 1404221231 in words is "one billion, four hundred four million, two hundred twenty-one thousand, two hundred thirty-one".