3703313221 has 4 divisors (see below), whose sum is σ = 3703462252. Its totient is φ = 3703164192.

The previous prime is 3703313197. The next prime is 3703313231. The reversal of 3703313221 is 1223133073.

3703313221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 178516321 + 3524796900 = 13361^2 + 59370^2 .

It is a cyclic number.

It is not a de Polignac number, because 3703313221 - 2⁵ = 3703313189 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 (3703313231) 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, 27246 + ... + 90271.

It is an arithmetic number, because the mean of its divisors is an integer number (925865563).

Almost surely, 2^3703313221 is an apocalyptic number.

It is an amenable number.

3703313221 is a deficient number, since it is larger than the sum of its proper divisors (149031).

3703313221 is a wasteful number, since it uses less digits than its factorization.

3703313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149030.

The product of its (nonzero) digits is 2268, while the sum is 25.

The square root of 3703313221 is about 60854.8537176781. The cubic root of 3703313221 is about 1547.1419021552.

Adding to 3703313221 its reverse (1223133073), we get a palindrome (4926446294).

The spelling of 3703313221 in words is "three billion, seven hundred three million, three hundred thirteen thousand, two hundred twenty-one".