1404401331 has 32 divisors (see below), whose sum is σ = 2038091328. Its totient is φ = 856719360.

The previous prime is 1404401329. The next prime is 1404401333. The reversal of 1404401331 is 1331044041.

It is an interprime number because it is at equal distance from previous prime (1404401329) and next prime (1404401333).

It is not a de Polignac number, because 1404401331 - 2¹ = 1404401329 is a prime.

It is a super-2 number, since 2×1404401331² = 3944686197029143122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1404401298 and 1404401307.

It is not an unprimeable number, because it can be changed into a prime (1404401333) 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 31 ways as a sum of consecutive naturals, for example, 703671 + ... + 705663.

It is an arithmetic number, because the mean of its divisors is an integer number (63690354).

Almost surely, 2^1404401331 is an apocalyptic number.

1404401331 is a deficient number, since it is larger than the sum of its proper divisors (633689997).

1404401331 is a wasteful number, since it uses less digits than its factorization.

1404401331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391.

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

The square root of 1404401331 is about 37475.3429737474. The cubic root of 1404401331 is about 1119.8600300741.

Adding to 1404401331 its reverse (1331044041), we get a palindrome (2735445372).

The spelling of 1404401331 in words is "one billion, four hundred four million, four hundred one thousand, three hundred thirty-one".