3504401321 has 2 divisors, whose sum is σ = 3504401322. Its totient is φ = 3504401320.

The previous prime is 3504401291. The next prime is 3504401333. The reversal of 3504401321 is 1231044053.

3504401321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3333445696 + 170955625 = 57736^2 + 13075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3504401321 is a prime.

It is not a weakly prime, because it can be changed into another prime (3504401221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1752200660 + 1752200661.

It is an arithmetic number, because the mean of its divisors is an integer number (1752200661).

Almost surely, 2^3504401321 is an apocalyptic number.

It is an amenable number.

3504401321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3504401321 is an equidigital number, since it uses as much as digits as its factorization.

3504401321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 3504401321 is about 59197.9840957443. The cubic root of 3504401321 is about 1518.9306480553.

Adding to 3504401321 its reverse (1231044053), we get a palindrome (4735445374).

The spelling of 3504401321 in words is "three billion, five hundred four million, four hundred one thousand, three hundred twenty-one".