3631309 has 16 divisors (see below), whose sum is σ = 4276224. Its totient is φ = 3049200.

The previous prime is 3631249. The next prime is 3631321. The reversal of 3631309 is 9031363.

It is not a de Polignac number, because 3631309 - 2⁷ = 3631181 is a prime.

It is a Duffinian number.

3631309 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3631339) 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 15 ways as a sum of consecutive naturals, for example, 7612 + ... + 8074.

It is an arithmetic number, because the mean of its divisors is an integer number (267264).

Almost surely, 2^3631309 is an apocalyptic number.

It is an amenable number.

3631309 is a deficient number, since it is larger than the sum of its proper divisors (644915).

3631309 is a wasteful number, since it uses less digits than its factorization.

3631309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528.

The product of its (nonzero) digits is 1458, while the sum is 25.

The square root of 3631309 is about 1905.5993807724. The cubic root of 3631309 is about 153.7049080096.

The spelling of 3631309 in words is "three million, six hundred thirty-one thousand, three hundred nine".