201137305181 has 2 divisors, whose sum is σ = 201137305182. Its totient is φ = 201137305180.

The previous prime is 201137305151. The next prime is 201137305199. The reversal of 201137305181 is 181503731102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174393936025 + 26743369156 = 417605^2 + 163534^2 .

It is a cyclic number.

It is not a de Polignac number, because 201137305181 - 2¹⁴ = 201137288797 is a prime.

It is a super-2 number, since 2×201137305181² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201137305151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100568652590 + 100568652591.

It is an arithmetic number, because the mean of its divisors is an integer number (100568652591).

Almost surely, 2^201137305181 is an apocalyptic number.

It is an amenable number.

201137305181 is a deficient number, since it is larger than the sum of its proper divisors (1).

201137305181 is an equidigital number, since it uses as much as digits as its factorization.

201137305181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The spelling of 201137305181 in words is "two hundred one billion, one hundred thirty-seven million, three hundred five thousand, one hundred eighty-one".