1321104404 has 12 divisors (see below), whose sum is σ = 2320465728. Its totient is φ = 658114200.

The previous prime is 1321104349. The next prime is 1321104413. The reversal of 1321104404 is 4044011231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608282 + ... + 610449.

It is an arithmetic number, because the mean of its divisors is an integer number (193372144).

Almost surely, 2^1321104404 is an apocalyptic number.

It is an amenable number.

1321104404 is a deficient number, since it is larger than the sum of its proper divisors (999361324).

1321104404 is a wasteful number, since it uses less digits than its factorization.

1321104404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219006 (or 1219004 counting only the distinct ones).

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

The square root of 1321104404 is about 36346.9999312185. Note that the first 4 decimals coincide. The cubic root of 1321104404 is about 1097.2671566341.

Adding to 1321104404 its reverse (4044011231), we get a palindrome (5365115635).

The spelling of 1321104404 in words is "one billion, three hundred twenty-one million, one hundred four thousand, four hundred four".