201230223131 has 4 divisors (see below), whose sum is σ = 229977397872. Its totient is φ = 172483048392.

The previous prime is 201230223113. The next prime is 201230223149. The reversal of 201230223131 is 131322032102.

201230223131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (201230223113) and next prime (201230223149).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201230223131 is a prime.

It is a super-2 number, since 2×201230223131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201230223331) 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 3 ways as a sum of consecutive naturals, for example, 14373587360 + ... + 14373587373.

It is an arithmetic number, because the mean of its divisors is an integer number (57494349468).

Almost surely, 2^201230223131 is an apocalyptic number.

201230223131 is a deficient number, since it is larger than the sum of its proper divisors (28747174741).

201230223131 is an equidigital number, since it uses as much as digits as its factorization.

201230223131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28747174740.

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

Adding to 201230223131 its reverse (131322032102), we get a palindrome (332552255233).

The spelling of 201230223131 in words is "two hundred one billion, two hundred thirty million, two hundred twenty-three thousand, one hundred thirty-one".