12440131 has 6 divisors (see below), whose sum is σ = 13673996. Its totient is φ = 11309100.

The previous prime is 12440119. The next prime is 12440137. The reversal of 12440131 is 13104421.

It is not a de Polignac number, because 12440131 - 2¹⁹ = 11915843 is a prime.

It is a super-2 number, since 2×12440131² = 309513718594322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12440137) 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 5 ways as a sum of consecutive naturals, for example, 51285 + ... + 51526.

Almost surely, 2^12440131 is an apocalyptic number.

12440131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12440131 is a deficient number, since it is larger than the sum of its proper divisors (1233865).

12440131 is a wasteful number, since it uses less digits than its factorization.

12440131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102833 (or 102822 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 12440131 is about 3527.0569884820. The cubic root of 12440131 is about 231.7083321939.

Adding to 12440131 its reverse (13104421), we get a palindrome (25544552).

The spelling of 12440131 in words is "twelve million, four hundred forty thousand, one hundred thirty-one".