403321401 has 18 divisors (see below), whose sum is σ = 677690442. Its totient is φ = 230469120.

The previous prime is 403321363. The next prime is 403321403. The reversal of 403321401 is 104123304.

It can be written as a sum of positive squares in only one way, i.e., 403045776 + 275625 = 20076^2 + 525^2 .

It is not a de Polignac number, because 403321401 - 2¹¹ = 403319353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (403321403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 456840 + ... + 457721.

It is an arithmetic number, because the mean of its divisors is an integer number (37649469).

Almost surely, 2^403321401 is an apocalyptic number.

It is an amenable number.

403321401 is a deficient number, since it is larger than the sum of its proper divisors (274369041).

403321401 is a wasteful number, since it uses less digits than its factorization.

403321401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914581 (or 914571 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 403321401 is about 20082.8633665621. The cubic root of 403321401 is about 738.8400386705.

Adding to 403321401 its reverse (104123304), we get a palindrome (507444705).

The spelling of 403321401 in words is "four hundred three million, three hundred twenty-one thousand, four hundred one".