12740131 has 4 divisors (see below), whose sum is σ = 12762000. Its totient is φ = 12718264.

The previous prime is 12740129. The next prime is 12740153. The reversal of 12740131 is 13104721.

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 12740131 - 2¹ = 12740129 is a prime.

It is a super-2 number, since 2×12740131² = 324621875794322, 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 = 12740099 and 12740108.

It is not an unprimeable number, because it can be changed into a prime (12740111) 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, 10036 + ... + 11233.

It is an arithmetic number, because the mean of its divisors is an integer number (3190500).

Almost surely, 2^12740131 is an apocalyptic number.

12740131 is a deficient number, since it is larger than the sum of its proper divisors (21869).

12740131 is an equidigital number, since it uses as much as digits as its factorization.

12740131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21868.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 12740131 is about 3569.3320103347. The cubic root of 12740131 is about 233.5561447646.

Adding to 12740131 its reverse (13104721), we get a palindrome (25844852).

The spelling of 12740131 in words is "twelve million, seven hundred forty thousand, one hundred thirty-one".