201231023159 has 2 divisors, whose sum is σ = 201231023160. Its totient is φ = 201231023158.

The previous prime is 201231023111. The next prime is 201231023179. The reversal of 201231023159 is 951320132102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201231023159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201231023179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100615511579 + 100615511580.

It is an arithmetic number, because the mean of its divisors is an integer number (100615511580).

Almost surely, 2^201231023159 is an apocalyptic number.

201231023159 is a deficient number, since it is larger than the sum of its proper divisors (1).

201231023159 is an equidigital number, since it uses as much as digits as its factorization.

201231023159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The spelling of 201231023159 in words is "two hundred one billion, two hundred thirty-one million, twenty-three thousand, one hundred fifty-nine".