12940131 has 8 divisors (see below), whose sum is σ = 17284624. Its totient is φ = 8611200.

The previous prime is 12940129. The next prime is 12940139. The reversal of 12940131 is 13104921.

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

It is not a de Polignac number, because 12940131 - 2¹ = 12940129 is a prime.

It is a super-2 number, since 2×12940131² = 334893980594322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12940098 and 12940107.

It is not an unprimeable number, because it can be changed into a prime (12940139) 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 7 ways as a sum of consecutive naturals, for example, 1786 + ... + 5391.

It is an arithmetic number, because the mean of its divisors is an integer number (2160578).

Almost surely, 2^12940131 is an apocalyptic number.

12940131 is a deficient number, since it is larger than the sum of its proper divisors (4344493).

12940131 is an equidigital number, since it uses as much as digits as its factorization.

12940131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7781.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 12940131 is about 3597.2393581745. The cubic root of 12940131 is about 234.7719592578.

The spelling of 12940131 in words is "twelve million, nine hundred forty thousand, one hundred thirty-one".