321401 has 4 divisors (see below), whose sum is σ = 322704. Its totient is φ = 320100.

The previous prime is 321397. The next prime is 321403. The reversal of 321401 is 104123.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 321401 - 2² = 321397 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 321401.

It is not an unprimeable number, because it can be changed into a prime (321403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155 + ... + 816.

It is an arithmetic number, because the mean of its divisors is an integer number (80676).

2³²¹⁴⁰¹ is an apocalyptic number.

It is an amenable number.

321401 is a deficient number, since it is larger than the sum of its proper divisors (1303).

321401 is an equidigital number, since it uses as much as digits as its factorization.

321401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 321401 is about 566.9223932780. The cubic root of 321401 is about 68.4987123917.

Adding to 321401 its reverse (104123), we get a palindrome (425524).

The spelling of 321401 in words is "three hundred twenty-one thousand, four hundred one", and thus it is an iban number.