403321361 has 4 divisors (see below), whose sum is σ = 410931252. Its totient is φ = 395711472.

The previous prime is 403321351. The next prime is 403321363. The reversal of 403321361 is 163123304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 203946961 + 199374400 = 14281^2 + 14120^2 .

It is a cyclic number.

It is not a de Polignac number, because 403321361 - 2⁶ = 403321297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403321363) 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, 3804866 + ... + 3804971.

It is an arithmetic number, because the mean of its divisors is an integer number (102732813).

Almost surely, 2^403321361 is an apocalyptic number.

It is an amenable number.

403321361 is a deficient number, since it is larger than the sum of its proper divisors (7609891).

403321361 is an equidigital number, since it uses as much as digits as its factorization.

403321361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7609890.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 403321361 is about 20082.8623706881. The cubic root of 403321361 is about 738.8400142453.

Adding to 403321361 its reverse (163123304), we get a palindrome (566444665).

The spelling of 403321361 in words is "four hundred three million, three hundred twenty-one thousand, three hundred sixty-one".