12103181 has 8 divisors (see below), whose sum is σ = 12603384. Its totient is φ = 11612160.

The previous prime is 12103163. The next prime is 12103207. The reversal of 12103181 is 18130121.

12103181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6295081 + 5808100 = 2509^2 + 2410^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12103181 - 2¹⁰ = 12102157 is a prime.

It is a super-2 number, since 2×12103181² = 292973980637522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461 + ... + 4941.

It is an arithmetic number, because the mean of its divisors is an integer number (1575423).

Almost surely, 2^12103181 is an apocalyptic number.

It is an amenable number.

12103181 is a deficient number, since it is larger than the sum of its proper divisors (500203).

12103181 is an equidigital number, since it uses as much as digits as its factorization.

12103181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4591.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 12103181 is about 3478.9626327398. The cubic root of 12103181 is about 229.5971587361.

The spelling of 12103181 in words is "twelve million, one hundred three thousand, one hundred eighty-one".