231131241247 has 2 divisors, whose sum is σ = 231131241248. Its totient is φ = 231131241246.

The previous prime is 231131241217. The next prime is 231131241259. The reversal of 231131241247 is 742142131132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231131241247 - 2⁷ = 231131241119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231131241217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115565620623 + 115565620624.

It is an arithmetic number, because the mean of its divisors is an integer number (115565620624).

Almost surely, 2^231131241247 is an apocalyptic number.

231131241247 is a deficient number, since it is larger than the sum of its proper divisors (1).

231131241247 is an equidigital number, since it uses as much as digits as its factorization.

231131241247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 31.

Adding to 231131241247 its reverse (742142131132), we get a palindrome (973273372379).

The spelling of 231131241247 in words is "two hundred thirty-one billion, one hundred thirty-one million, two hundred forty-one thousand, two hundred forty-seven".