201023310232109 has 2 divisors, whose sum is σ = 201023310232110. Its totient is φ = 201023310232108.

The previous prime is 201023310232007. The next prime is 201023310232111. The reversal of 201023310232109 is 901232013320102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191741569138084 + 9281741094025 = 13847078^2 + 3046595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201023310232109 is a prime.

Together with 201023310232111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201023310832109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100511655116054 + 100511655116055.

It is an arithmetic number, because the mean of its divisors is an integer number (100511655116055).

Almost surely, 2^{201023310232109} is an apocalyptic number.

It is an amenable number.

201023310232109 is a deficient number, since it is larger than the sum of its proper divisors (1).

201023310232109 is an equidigital number, since it uses as much as digits as its factorization.

201023310232109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 201023310232109 in words is "two hundred one trillion, twenty-three billion, three hundred ten million, two hundred thirty-two thousand, one hundred nine".