321250401 has 8 divisors (see below), whose sum is σ = 475926560. Its totient is φ = 214166916.

The previous prime is 321250393. The next prime is 321250403. The reversal of 321250401 is 104052123.

321250401 is a `hidden beast` number, since 3 + 212 + 50 + 401 = 666.

It is not a de Polignac number, because 321250401 - 2³ = 321250393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321250403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5949055 + ... + 5949108.

It is an arithmetic number, because the mean of its divisors is an integer number (59490820).

Almost surely, 2^321250401 is an apocalyptic number.

It is an amenable number.

321250401 is a deficient number, since it is larger than the sum of its proper divisors (154676159).

321250401 is a wasteful number, since it uses less digits than its factorization.

321250401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11898172 (or 11898166 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 321250401 is about 17923.4595153949. The cubic root of 321250401 is about 684.8801189681.

The spelling of 321250401 in words is "three hundred twenty-one million, two hundred fifty thousand, four hundred one".