12140831 has 2 divisors, whose sum is σ = 12140832. Its totient is φ = 12140830.

The previous prime is 12140827. The next prime is 12140837. The reversal of 12140831 is 13804121.

12140831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (13804121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12140831 - 2² = 12140827 is a prime.

It is a super-2 number, since 2×12140831² = 294799554741122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12140837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6070415 + 6070416.

It is an arithmetic number, because the mean of its divisors is an integer number (6070416).

Almost surely, 2^12140831 is an apocalyptic number.

12140831 is a deficient number, since it is larger than the sum of its proper divisors (1).

12140831 is an equidigital number, since it uses as much as digits as its factorization.

12140831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 12140831 is about 3484.3695269015. The cubic root of 12140831 is about 229.8349856079.

Adding to 12140831 its reverse (13804121), we get a palindrome (25944952).

The spelling of 12140831 in words is "twelve million, one hundred forty thousand, eight hundred thirty-one".