3028181 has 4 divisors (see below), whose sum is σ = 3261132. Its totient is φ = 2795232.

The previous prime is 3028177. The next prime is 3028213. The reversal of 3028181 is 1818203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1818203 = 59 ⋅30817.

It can be written as a sum of positive squares in 2 ways, for example, as 625681 + 2402500 = 791^2 + 1550^2 .

It is a cyclic number.

It is not a de Polignac number, because 3028181 - 2² = 3028177 is a prime.

It is a super-2 number, since 2×3028181² = 18339760337522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3028121) 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, 116456 + ... + 116481.

It is an arithmetic number, because the mean of its divisors is an integer number (815283).

Almost surely, 2^3028181 is an apocalyptic number.

It is an amenable number.

3028181 is a deficient number, since it is larger than the sum of its proper divisors (232951).

3028181 is a wasteful number, since it uses less digits than its factorization.

3028181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232950.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 3028181 is about 1740.1669460141. The cubic root of 3028181 is about 144.6751506937.

The spelling of 3028181 in words is "three million, twenty-eight thousand, one hundred eighty-one".