231140027 has 2 divisors, whose sum is σ = 231140028. Its totient is φ = 231140026.

The previous prime is 231140023. The next prime is 231140033. The reversal of 231140027 is 720041132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231140027 - 2² = 231140023 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 231139990 and 231140008.

It is not a weakly prime, because it can be changed into another prime (231140023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115570013 + 115570014.

It is an arithmetic number, because the mean of its divisors is an integer number (115570014).

Almost surely, 2^231140027 is an apocalyptic number.

231140027 is a deficient number, since it is larger than the sum of its proper divisors (1).

231140027 is an equidigital number, since it uses as much as digits as its factorization.

231140027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 231140027 is about 15203.2900057849. The cubic root of 231140027 is about 613.7031982320.

Adding to 231140027 its reverse (720041132), we get a palindrome (951181159).

The spelling of 231140027 in words is "two hundred thirty-one million, one hundred forty thousand, twenty-seven".