12131081 has 8 divisors (see below), whose sum is σ = 12900384. Its totient is φ = 11368000.

The previous prime is 12131071. The next prime is 12131089. The reversal of 12131081 is 18013121.

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 12131081 - 2⁶ = 12131017 is a prime.

It is a super-2 number, since 2×12131081² = 294326252457122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12131089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2846 + ... + 5688.

It is an arithmetic number, because the mean of its divisors is an integer number (1612548).

Almost surely, 2^12131081 is an apocalyptic number.

It is an amenable number.

12131081 is a deficient number, since it is larger than the sum of its proper divisors (769303).

12131081 is a wasteful number, since it uses less digits than its factorization.

12131081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3111.

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

The square root of 12131081 is about 3482.9701405553. The cubic root of 12131081 is about 229.7734442069.

The spelling of 12131081 in words is "twelve million, one hundred thirty-one thousand, eighty-one".