201113231 has 16 divisors (see below), whose sum is σ = 227556000. Its totient is φ = 176064000.

The previous prime is 201113221. The next prime is 201113239. The reversal of 201113231 is 132311102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201113231 is a prime.

It is a super-2 number, since 2×201113231² = 80893063366518722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201113239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191195 + ... + 192243.

It is an arithmetic number, because the mean of its divisors is an integer number (14222250).

Almost surely, 2^201113231 is an apocalyptic number.

201113231 is a deficient number, since it is larger than the sum of its proper divisors (26442769).

201113231 is a wasteful number, since it uses less digits than its factorization.

201113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 201113231 is about 14181.4396659860. The cubic root of 201113231 is about 585.8865764161.

Adding to 201113231 its reverse (132311102), we get a palindrome (333424333).

The spelling of 201113231 in words is "two hundred one million, one hundred thirteen thousand, two hundred thirty-one".