201043251 has 12 divisors (see below), whose sum is σ = 295157200. Its totient is φ = 131831280.

The previous prime is 201043243. The next prime is 201043261. The reversal of 201043251 is 152340102.

It is not a de Polignac number, because 201043251 - 2³ = 201043243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201043261) 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 in 11 ways as a sum of consecutive naturals, for example, 182551 + ... + 183648.

Almost surely, 2^201043251 is an apocalyptic number.

201043251 is a deficient number, since it is larger than the sum of its proper divisors (94113949).

201043251 is a wasteful number, since it uses less digits than its factorization.

201043251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366266 (or 366263 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 201043251 is about 14178.9721418726. The cubic root of 201043251 is about 585.8186128799.

Adding to 201043251 its reverse (152340102), we get a palindrome (353383353).

The spelling of 201043251 in words is "two hundred one million, forty-three thousand, two hundred fifty-one".