201230232113 has 4 divisors (see below), whose sum is σ = 201234342900. Its totient is φ = 201226121328.

The previous prime is 201230232103. The next prime is 201230232193. The reversal of 201230232113 is 311232032102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 189971324449 + 11258907664 = 435857^2 + 106108^2 .

It is a cyclic number.

It is not a de Polignac number, because 201230232113 - 2⁴ = 201230232097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201230232103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1981070 + ... + 2080167.

It is an arithmetic number, because the mean of its divisors is an integer number (50308585725).

Almost surely, 2^201230232113 is an apocalyptic number.

It is an amenable number.

201230232113 is a deficient number, since it is larger than the sum of its proper divisors (4110787).

201230232113 is an equidigital number, since it uses as much as digits as its factorization.

201230232113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4110786.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 201230232113 its reverse (311232032102), we get a palindrome (512462264215).

The spelling of 201230232113 in words is "two hundred one billion, two hundred thirty million, two hundred thirty-two thousand, one hundred thirteen".