3931304 has 32 divisors (see below), whose sum is σ = 8037120. Its totient is φ = 1791936.

The previous prime is 3931283. The next prime is 3931307. The reversal of 3931304 is 4031393.

It is a super-2 number, since 2×3931304² = 30910302280832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3931304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3931307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10529 + ... + 10895.

It is an arithmetic number, because the mean of its divisors is an integer number (251160).

Almost surely, 2^3931304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3931304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4018560).

3931304 is an abundant number, since it is smaller than the sum of its proper divisors (4105816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3931304 is a wasteful number, since it uses less digits than its factorization.

3931304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 3931304 is about 1982.7516233760. The cubic root of 3931304 is about 157.8261185973.

Adding to 3931304 its reverse (4031393), we get a palindrome (7962697).

The spelling of 3931304 in words is "three million, nine hundred thirty-one thousand, three hundred four".