231143044207 has 2 divisors, whose sum is σ = 231143044208. Its totient is φ = 231143044206.

The previous prime is 231143044193. The next prime is 231143044243. The reversal of 231143044207 is 702440341132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231143044207 - 2³¹ = 228995560559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231143044007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115571522103 + 115571522104.

It is an arithmetic number, because the mean of its divisors is an integer number (115571522104).

Almost surely, 2^231143044207 is an apocalyptic number.

231143044207 is a deficient number, since it is larger than the sum of its proper divisors (1).

231143044207 is an equidigital number, since it uses as much as digits as its factorization.

231143044207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 31.

Adding to 231143044207 its reverse (702440341132), we get a palindrome (933583385339).

The spelling of 231143044207 in words is "two hundred thirty-one billion, one hundred forty-three million, forty-four thousand, two hundred seven".