12461131 has 4 divisors (see below), whose sum is σ = 13117000. Its totient is φ = 11805264.

The previous prime is 12461123. The next prime is 12461161. The reversal of 12461131 is 13116421.

12461131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12461131 - 2³ = 12461123 is a prime.

It is a super-2 number, since 2×12461131² = 310559571598322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 655849 = 12461131 / (1 + 2 + 4 + 6 + 1 + 1 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12461099 and 12461108.

It is not an unprimeable number, because it can be changed into a prime (12461161) 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, 327906 + ... + 327943.

It is an arithmetic number, because the mean of its divisors is an integer number (3279250).

Almost surely, 2^12461131 is an apocalyptic number.

12461131 is a deficient number, since it is larger than the sum of its proper divisors (655869).

12461131 is an equidigital number, since it uses as much as digits as its factorization.

12461131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655868.

The product of its digits is 144, while the sum is 19.

The square root of 12461131 is about 3530.0327193951. The cubic root of 12461131 is about 231.8386400269.

Adding to 12461131 its reverse (13116421), we get a palindrome (25577552).

The spelling of 12461131 in words is "twelve million, four hundred sixty-one thousand, one hundred thirty-one".