201126131 has 2 divisors, whose sum is σ = 201126132. Its totient is φ = 201126130.

The previous prime is 201126091. The next prime is 201126139. The reversal of 201126131 is 131621102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201126131 - 2¹⁸ = 200863987 is a prime.

It is a super-2 number, since 2×201126131² = 80903441142058322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201126139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100563065 + 100563066.

It is an arithmetic number, because the mean of its divisors is an integer number (100563066).

Almost surely, 2^201126131 is an apocalyptic number.

201126131 is a deficient number, since it is larger than the sum of its proper divisors (1).

201126131 is an equidigital number, since it uses as much as digits as its factorization.

201126131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 201126131 is about 14181.8944785244. The cubic root of 201126131 is about 585.8991029834.

Adding to 201126131 its reverse (131621102), we get a palindrome (332747233).

The spelling of 201126131 in words is "two hundred one million, one hundred twenty-six thousand, one hundred thirty-one".