201040531 has 2 divisors, whose sum is σ = 201040532. Its totient is φ = 201040530.

The previous prime is 201040519. The next prime is 201040621. The reversal of 201040531 is 135040102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201040531 - 2⁹ = 201040019 is a prime.

It is a super-2 number, since 2×201040531² = 80834590209523922, which contains 22 as substring.

It is equal to p_11133403 and since 201040531 and 11133403 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (201041531) 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 as a sum of consecutive naturals, namely, 100520265 + 100520266.

It is an arithmetic number, because the mean of its divisors is an integer number (100520266).

Almost surely, 2^201040531 is an apocalyptic number.

201040531 is a deficient number, since it is larger than the sum of its proper divisors (1).

201040531 is an equidigital number, since it uses as much as digits as its factorization.

201040531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 201040531 is about 14178.8762248635. The cubic root of 201040531 is about 585.8159709379.

Adding to 201040531 its reverse (135040102), we get a palindrome (336080633).

The spelling of 201040531 in words is "two hundred one million, forty thousand, five hundred thirty-one".