201123030 has 32 divisors (see below), whose sum is σ = 489312864. Its totient is φ = 52897536.

The previous prime is 201122989. The next prime is 201123059. The reversal of 201123030 is 30321102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201122997 and 201123015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43729 + ... + 48108.

It is an arithmetic number, because the mean of its divisors is an integer number (15291027).

Almost surely, 2^201123030 is an apocalyptic number.

201123030 is an abundant number, since it is smaller than the sum of its proper divisors (288189834).

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

201123030 is a wasteful number, since it uses less digits than its factorization.

201123030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91920.

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

The square root of 201123030 is about 14181.7851485629. The cubic root of 201123030 is about 585.8960918009.

Adding to 201123030 its reverse (30321102), we get a palindrome (231444132).

The spelling of 201123030 in words is "two hundred one million, one hundred twenty-three thousand, thirty".