3113218 has 4 divisors (see below), whose sum is σ = 4669830. Its totient is φ = 1556608.

The previous prime is 3113213. The next prime is 3113221. The reversal of 3113218 is 8123113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8123113 = 251 ⋅32363.

It can be written as a sum of positive squares in only one way, i.e., 1656369 + 1456849 = 1287^2 + 1207^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3113195 and 3113204.

It is not an unprimeable number, because it can be changed into a prime (3113213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 778303 + ... + 778306.

Almost surely, 2^3113218 is an apocalyptic number.

3113218 is a deficient number, since it is larger than the sum of its proper divisors (1556612).

3113218 is a wasteful number, since it uses less digits than its factorization.

3113218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556611.

The product of its digits is 144, while the sum is 19.

The square root of 3113218 is about 1764.4313531560. The cubic root of 3113218 is about 146.0169180370.

The spelling of 3113218 in words is "three million, one hundred thirteen thousand, two hundred eighteen".