201951113 has 12 divisors (see below), whose sum is σ = 249922368. Its totient is φ = 159784560.

The previous prime is 201951089. The next prime is 201951163. The reversal of 201951113 is 311159102.

It is not a de Polignac number, because 201951113 - 2⁶ = 201951049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201951163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84173 + ... + 86538.

It is an arithmetic number, because the mean of its divisors is an integer number (20826864).

Almost surely, 2^201951113 is an apocalyptic number.

It is an amenable number.

201951113 is a deficient number, since it is larger than the sum of its proper divisors (47971255).

201951113 is a wasteful number, since it uses less digits than its factorization.

201951113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170744 (or 170731 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 201951113 is about 14210.9504608242. The cubic root of 201951113 is about 586.6990932418.

The spelling of 201951113 in words is "two hundred one million, nine hundred fifty-one thousand, one hundred thirteen".