403401321 has 6 divisors (see below), whose sum is σ = 582690810. Its totient is φ = 268934208.

The previous prime is 403401319. The next prime is 403401353. The reversal of 403401321 is 123104304.

403401321 is a `hidden beast` number, since 4 + 0 + 340 + 1 + 321 = 666.

It can be written as a sum of positive squares in only one way, i.e., 402564096 + 837225 = 20064^2 + 915^2 .

It is not a de Polignac number, because 403401321 - 2¹ = 403401319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 403401294 and 403401303.

It is not an unprimeable number, because it can be changed into a prime (403401371) 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 5 ways as a sum of consecutive naturals, for example, 22411176 + ... + 22411193.

It is an arithmetic number, because the mean of its divisors is an integer number (97115135).

Almost surely, 2^403401321 is an apocalyptic number.

It is an amenable number.

403401321 is a deficient number, since it is larger than the sum of its proper divisors (179289489).

403401321 is a wasteful number, since it uses less digits than its factorization.

403401321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44822375 (or 44822372 counting only the distinct ones).

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

The square root of 403401321 is about 20084.8530241075. The cubic root of 403401321 is about 738.8888369705. Note that the first 4 decimals are identical.

Adding to 403401321 its reverse (123104304), we get a palindrome (526505625).

The spelling of 403401321 in words is "four hundred three million, four hundred one thousand, three hundred twenty-one".