12140631 has 8 divisors (see below), whose sum is σ = 17986160. Its totient is φ = 8093736.

The previous prime is 12140629. The next prime is 12140651. The reversal of 12140631 is 13604121.

It is a happy number.

It is not a de Polignac number, because 12140631 - 2¹ = 12140629 is a prime.

It is a super-2 number, since 2×12140631² = 294789842156322, 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 (12140651) 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, 224800 + ... + 224853.

It is an arithmetic number, because the mean of its divisors is an integer number (2248270).

Almost surely, 2^12140631 is an apocalyptic number.

12140631 is a deficient number, since it is larger than the sum of its proper divisors (5845529).

12140631 is an equidigital number, since it uses as much as digits as its factorization.

12140631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449662 (or 449656 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 12140631 is about 3484.3408271867. The cubic root of 12140631 is about 229.8337235512.

Adding to 12140631 its reverse (13604121), we get a palindrome (25744752).

The spelling of 12140631 in words is "twelve million, one hundred forty thousand, six hundred thirty-one".