201013231 has 2 divisors, whose sum is σ = 201013232. Its totient is φ = 201013230.

The previous prime is 201013229. The next prime is 201013247. The reversal of 201013231 is 132310102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201013231 - 2¹ = 201013229 is a prime.

It is a super-2 number, since 2×201013231² = 80812638074118722, which contains 22 as substring.

Together with 201013229, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201013291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100506615 + 100506616.

It is an arithmetic number, because the mean of its divisors is an integer number (100506616).

Almost surely, 2^201013231 is an apocalyptic number.

201013231 is a deficient number, since it is larger than the sum of its proper divisors (1).

201013231 is an equidigital number, since it uses as much as digits as its factorization.

201013231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 201013231 is about 14177.9134924713. The cubic root of 201013231 is about 585.7894530680.

Adding to 201013231 its reverse (132310102), we get a palindrome (333323333).

It can be divided in two parts, 20101 and 3231, that added together give a palindrome (23332).

The spelling of 201013231 in words is "two hundred one million, thirteen thousand, two hundred thirty-one".