3120181 has 8 divisors (see below), whose sum is σ = 3241728. Its totient is φ = 3000000.

The previous prime is 3120137. The next prime is 3120217. The reversal of 3120181 is 1810213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 6-Lehmer number, since φ(3120181) divides (3120181-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 3120181 - 2¹⁹ = 2595893 is a prime.

It is a super-2 number, since 2×3120181² = 19471058945522, 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 (3120281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7581 + ... + 7981.

It is an arithmetic number, because the mean of its divisors is an integer number (405216).

Almost surely, 2^3120181 is an apocalyptic number.

3120181 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3120181 is a deficient number, since it is larger than the sum of its proper divisors (121547).

3120181 is a wasteful number, since it uses less digits than its factorization.

3120181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 3120181 is about 1766.4034080583. The cubic root of 3120181 is about 146.1256970933.

Adding to 3120181 its reverse (1810213), we get a palindrome (4930394).

The spelling of 3120181 in words is "three million, one hundred twenty thousand, one hundred eighty-one".