3631091 has 4 divisors (see below), whose sum is σ = 3635184. Its totient is φ = 3627000.

The previous prime is 3631073. The next prime is 3631139. The reversal of 3631091 is 1901363.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3631091 - 2⁶ = 3631027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3631031) 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, 95 + ... + 2696.

It is an arithmetic number, because the mean of its divisors is an integer number (908796).

Almost surely, 2^3631091 is an apocalyptic number.

3631091 is a deficient number, since it is larger than the sum of its proper divisors (4093).

3631091 is a wasteful number, since it uses less digits than its factorization.

3631091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 3631091 is about 1905.5421800632. The cubic root of 3631091 is about 153.7018321362.

The spelling of 3631091 in words is "three million, six hundred thirty-one thousand, ninety-one".