3131836 has 12 divisors (see below), whose sum is σ = 5516728. Its totient is φ = 1555632.

The previous prime is 3131833. The next prime is 3131851. The reversal of 3131836 is 6381313.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3131836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131833) 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, 1866 + ... + 3121.

Almost surely, 2^3131836 is an apocalyptic number.

It is an amenable number.

3131836 is a deficient number, since it is larger than the sum of its proper divisors (2384892).

3131836 is a wasteful number, since it uses less digits than its factorization.

3131836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5148 (or 5146 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 3131836 is about 1769.6994095043. The cubic root of 3131836 is about 146.3074150589.

The spelling of 3131836 in words is "three million, one hundred thirty-one thousand, eight hundred thirty-six".