201023130 has 128 divisors (see below), whose sum is σ = 637009920. Its totient is φ = 39306240.

The previous prime is 201023111. The next prime is 201023131. The reversal of 201023130 is 31320102.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201023131) 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 63 ways as a sum of consecutive naturals, for example, 36711 + ... + 41829.

It is an arithmetic number, because the mean of its divisors is an integer number (4976640).

Almost surely, 2^201023130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201023130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318504960).

201023130 is an abundant number, since it is smaller than the sum of its proper divisors (435986790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201023130 is a wasteful number, since it uses less digits than its factorization.

201023130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5164.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 201023130 is about 14178.2625874964. The cubic root of 201023130 is about 585.7990687445.

Adding to 201023130 its reverse (31320102), we get a palindrome (232343232).

It can be divided in two parts, 20102 and 3130, that added together give a palindrome (23232).

The spelling of 201023130 in words is "two hundred one million, twenty-three thousand, one hundred thirty".