3108181 has 4 divisors (see below), whose sum is σ = 3124000. Its totient is φ = 3092364.

The previous prime is 3108173. The next prime is 3108199. The reversal of 3108181 is 1818013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3108181 - 2³ = 3108173 is a prime.

It is a super-2 number, since 2×3108181² = 19321578257522, which contains 22 as substring.

It is a Duffinian number.

3108181 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3102181) 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, 7611 + ... + 8008.

It is an arithmetic number, because the mean of its divisors is an integer number (781000).

Almost surely, 2^3108181 is an apocalyptic number.

It is an amenable number.

3108181 is a deficient number, since it is larger than the sum of its proper divisors (15819).

3108181 is a wasteful number, since it uses less digits than its factorization.

3108181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15818.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 3108181 is about 1763.0034032866. The cubic root of 3108181 is about 145.9381266566.

The spelling of 3108181 in words is "three million, one hundred eight thousand, one hundred eighty-one".