12140731 has 2 divisors, whose sum is σ = 12140732. Its totient is φ = 12140730.

The previous prime is 12140693. The next prime is 12140759. The reversal of 12140731 is 13704121.

12140731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (13704121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12140731 - 2¹¹ = 12138683 is a prime.

It is a super-2 number, since 2×12140731² = 294794698428722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12140699 and 12140708.

It is not a weakly prime, because it can be changed into another prime (12140131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6070365 + 6070366.

It is an arithmetic number, because the mean of its divisors is an integer number (6070366).

Almost surely, 2^12140731 is an apocalyptic number.

12140731 is a deficient number, since it is larger than the sum of its proper divisors (1).

12140731 is an equidigital number, since it uses as much as digits as its factorization.

12140731 is an evil number, because the sum of its binary digits is even.

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

The square root of 12140731 is about 3484.3551770737. The cubic root of 12140731 is about 229.8343545813.

Adding to 12140731 its reverse (13704121), we get a palindrome (25844852).

The spelling of 12140731 in words is "twelve million, one hundred forty thousand, seven hundred thirty-one".