3191138 has 12 divisors (see below), whose sum is σ = 5085762. Its totient is φ = 1501440.

The previous prime is 3191137. The next prime is 3191161. The reversal of 3191138 is 8311913.

It can be written as a sum of positive squares in 3 ways, for example, as 3052009 + 139129 = 1747^2 + 373^2 .

It is not an unprimeable number, because it can be changed into a prime (3191137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2183 + ... + 3338.

Almost surely, 2^3191138 is an apocalyptic number.

3191138 is a deficient number, since it is larger than the sum of its proper divisors (1894624).

3191138 is a wasteful number, since it uses less digits than its factorization.

3191138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5557 (or 5540 counting only the distinct ones).

The product of its digits is 648, while the sum is 26.

The square root of 3191138 is about 1786.3756603805. The cubic root of 3191138 is about 147.2251013136.

The spelling of 3191138 in words is "three million, one hundred ninety-one thousand, one hundred thirty-eight".