231201223147 has 2 divisors, whose sum is σ = 231201223148. Its totient is φ = 231201223146.

The previous prime is 231201223117. The next prime is 231201223241. The reversal of 231201223147 is 741322102132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231201223147 - 2²³ = 231192834539 is a prime.

It is not a weakly prime, because it can be changed into another prime (231201223117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115600611573 + 115600611574.

It is an arithmetic number, because the mean of its divisors is an integer number (115600611574).

Almost surely, 2^231201223147 is an apocalyptic number.

231201223147 is a deficient number, since it is larger than the sum of its proper divisors (1).

231201223147 is an equidigital number, since it uses as much as digits as its factorization.

231201223147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 231201223147 its reverse (741322102132), we get a palindrome (972523325279).

The spelling of 231201223147 in words is "two hundred thirty-one billion, two hundred one million, two hundred twenty-three thousand, one hundred forty-seven".