3217138 has 4 divisors (see below), whose sum is σ = 4825710. Its totient is φ = 1608568.

The previous prime is 3217133. The next prime is 3217141. The reversal of 3217138 is 8317123.

3217138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8317123 = 2377 ⋅3499.

It can be written as a sum of positive squares in only one way, i.e., 2301289 + 915849 = 1517^2 + 957^2 .

It is a super-2 number, since 2×3217138² = 20699953822088, which contains 22 as substring.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (3217133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804283 + ... + 804286.

Almost surely, 2^3217138 is an apocalyptic number.

3217138 is a deficient number, since it is larger than the sum of its proper divisors (1608572).

3217138 is a wasteful number, since it uses less digits than its factorization.

3217138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608571.

The product of its digits is 1008, while the sum is 25.

The square root of 3217138 is about 1793.6382020909. The cubic root of 3217138 is about 147.6238622515.

The spelling of 3217138 in words is "three million, two hundred seventeen thousand, one hundred thirty-eight".