231241427 has 2 divisors, whose sum is σ = 231241428. Its totient is φ = 231241426.

The previous prime is 231241399. The next prime is 231241469. The reversal of 231241427 is 724142132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231241427 - 2¹⁸ = 230979283 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231241396 and 231241405.

It is not a weakly prime, because it can be changed into another prime (231241027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115620713 + 115620714.

It is an arithmetic number, because the mean of its divisors is an integer number (115620714).

Almost surely, 2^231241427 is an apocalyptic number.

231241427 is a deficient number, since it is larger than the sum of its proper divisors (1).

231241427 is an equidigital number, since it uses as much as digits as its factorization.

231241427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 26.

The square root of 231241427 is about 15206.6244446294. The cubic root of 231241427 is about 613.7929279763.

Adding to 231241427 its reverse (724142132), we get a palindrome (955383559).

The spelling of 231241427 in words is "two hundred thirty-one million, two hundred forty-one thousand, four hundred twenty-seven".