321214404 has 36 divisors (see below), whose sum is σ = 871869264. Its totient is φ = 91775376.

The previous prime is 321214367. The next prime is 321214409. The reversal of 321214404 is 404412123.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (321214409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 272554 + ... + 273729.

Almost surely, 2^321214404 is an apocalyptic number.

It is an amenable number.

321214404 is an abundant number, since it is smaller than the sum of its proper divisors (550654860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321214404 is a wasteful number, since it uses less digits than its factorization.

321214404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546304 (or 546295 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 321214404 is about 17922.4553005441. The cubic root of 321214404 is about 684.8545371058.

Adding to 321214404 its reverse (404412123), we get a palindrome (725626527).

The spelling of 321214404 in words is "three hundred twenty-one million, two hundred fourteen thousand, four hundred four".