231041745247 has 2 divisors, whose sum is σ = 231041745248. Its totient is φ = 231041745246.

The previous prime is 231041745227. The next prime is 231041745331. The reversal of 231041745247 is 742547140132.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231041745247 - 2³¹ = 228894261599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231041745217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115520872623 + 115520872624.

It is an arithmetic number, because the mean of its divisors is an integer number (115520872624).

Almost surely, 2^231041745247 is an apocalyptic number.

231041745247 is a deficient number, since it is larger than the sum of its proper divisors (1).

231041745247 is an equidigital number, since it uses as much as digits as its factorization.

231041745247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 188160, while the sum is 40.

Adding to 231041745247 its reverse (742547140132), we get a palindrome (973588885379).

The spelling of 231041745247 in words is "two hundred thirty-one billion, forty-one million, seven hundred forty-five thousand, two hundred forty-seven".