201867131 has 2 divisors, whose sum is σ = 201867132. Its totient is φ = 201867130.

The previous prime is 201867121. The next prime is 201867139. The reversal of 201867131 is 131768102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201867131 - 2¹⁰ = 201866107 is a prime.

It is a super-2 number, since 2×201867131² = 81500677156342322, which contains 22 as substring.

It is a Sophie Germain prime.

It is equal to p_11176625 and since 201867131 and 11176625 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 201867094 and 201867103.

It is not a weakly prime, because it can be changed into another prime (201867139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100933565 + 100933566.

It is an arithmetic number, because the mean of its divisors is an integer number (100933566).

Almost surely, 2^201867131 is an apocalyptic number.

201867131 is a deficient number, since it is larger than the sum of its proper divisors (1).

201867131 is an equidigital number, since it uses as much as digits as its factorization.

201867131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 201867131 is about 14207.9953195375. The cubic root of 201867131 is about 586.6177550835.

The spelling of 201867131 in words is "two hundred one million, eight hundred sixty-seven thousand, one hundred thirty-one".