201001312031161 has 2 divisors, whose sum is σ = 201001312031162. Its totient is φ = 201001312031160.

The previous prime is 201001312031131. The next prime is 201001312031203. The reversal of 201001312031161 is 161130213100102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114800188815225 + 86201123215936 = 10714485^2 + 9284456^2 .

It is a cyclic number.

It is not a de Polignac number, because 201001312031161 - 2²⁹ = 201000775160249 is a prime.

It is not a weakly prime, because it can be changed into another prime (201001312031131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500656015580 + 100500656015581.

It is an arithmetic number, because the mean of its divisors is an integer number (100500656015581).

Almost surely, 2^{201001312031161} is an apocalyptic number.

It is an amenable number.

201001312031161 is a deficient number, since it is larger than the sum of its proper divisors (1).

201001312031161 is an equidigital number, since it uses as much as digits as its factorization.

201001312031161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 201001312031161 its reverse (161130213100102), we get a palindrome (362131525131263).

The spelling of 201001312031161 in words is "two hundred one trillion, one billion, three hundred twelve million, thirty-one thousand, one hundred sixty-one".