201145131 has 24 divisors (see below), whose sum is σ = 327890160. Its totient is φ = 117700800.

The previous prime is 201145111. The next prime is 201145151. The reversal of 201145131 is 131541102.

It is an interprime number because it is at equal distance from previous prime (201145111) and next prime (201145151).

It is not a de Polignac number, because 201145131 - 2¹¹ = 201143083 is a prime.

It is a super-2 number, since 2×201145131² = 80918727450014322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201145111) 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 23 ways as a sum of consecutive naturals, for example, 32160 + ... + 37901.

It is an arithmetic number, because the mean of its divisors is an integer number (13662090).

Almost surely, 2^201145131 is an apocalyptic number.

201145131 is a deficient number, since it is larger than the sum of its proper divisors (126745029).

201145131 is a wasteful number, since it uses less digits than its factorization.

201145131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70107 (or 70104 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 201145131 is about 14182.5643308959. The cubic root of 201145131 is about 585.9175519908.

Adding to 201145131 its reverse (131541102), we get a palindrome (332686233).

The spelling of 201145131 in words is "two hundred one million, one hundred forty-five thousand, one hundred thirty-one".