321111404 has 6 divisors (see below), whose sum is σ = 561944964. Its totient is φ = 160555700.

The previous prime is 321111397. The next prime is 321111407. The reversal of 321111404 is 404111123.

It is a happy number.

It is a super-2 number, since 2×321111404² = 206225067557702432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321111407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40138922 + ... + 40138929.

It is an arithmetic number, because the mean of its divisors is an integer number (93657494).

Almost surely, 2^321111404 is an apocalyptic number.

It is an amenable number.

321111404 is a deficient number, since it is larger than the sum of its proper divisors (240833560).

321111404 is a wasteful number, since it uses less digits than its factorization.

321111404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80277855 (or 80277853 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 321111404 is about 17919.5815799365. The cubic root of 321111404 is about 684.7813278957.

Adding to 321111404 its reverse (404111123), we get a palindrome (725222527).

The spelling of 321111404 in words is "three hundred twenty-one million, one hundred eleven thousand, four hundred four".