321004053 has 10 divisors (see below), whose sum is σ = 479524694. Its totient is φ = 214002648.

The previous prime is 321003997. The next prime is 321004063. The reversal of 321004053 is 350400123.

It can be written as a sum of positive squares in only one way, i.e., 311804964 + 9199089 = 17658^2 + 3033^2 .

It is not a de Polignac number, because 321004053 - 2⁶ = 321003989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321004063) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1981426 + ... + 1981587.

Almost surely, 2^321004053 is an apocalyptic number.

It is an amenable number.

321004053 is a deficient number, since it is larger than the sum of its proper divisors (158520641).

321004053 is an equidigital number, since it uses as much as digits as its factorization.

321004053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3963025 (or 3963016 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 321004053 is about 17916.5859750121. The cubic root of 321004053 is about 684.7050094665.

Adding to 321004053 its reverse (350400123), we get a palindrome (671404176).

The spelling of 321004053 in words is "three hundred twenty-one million, four thousand, fifty-three".