201131131 has 32 divisors (see below), whose sum is σ = 236390400. Its totient is φ = 169827840.

The previous prime is 201131123. The next prime is 201131141. The reversal of 201131131 is 131131102.

It is a cyclic number.

It is not a de Polignac number, because 201131131 - 2³ = 201131123 is a prime.

It is a super-2 number, since 2×201131131² = 80907463714678322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201131141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 530500 + ... + 530878.

It is an arithmetic number, because the mean of its divisors is an integer number (7387200).

Almost surely, 2^201131131 is an apocalyptic number.

201131131 is a deficient number, since it is larger than the sum of its proper divisors (35259269).

201131131 is a wasteful number, since it uses less digits than its factorization.

201131131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 201131131 is about 14182.0707585317. The cubic root of 201131131 is about 585.9039580980.

Adding to 201131131 its reverse (131131102), we get a palindrome (332262233).

The spelling of 201131131 in words is "two hundred one million, one hundred thirty-one thousand, one hundred thirty-one".