201030531 has 8 divisors (see below), whose sum is σ = 288659280. Its totient is φ = 123711072.

The previous prime is 201030521. The next prime is 201030551. The reversal of 201030531 is 135030102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201030531 - 2⁵ = 201030499 is a prime.

It is a super-2 number, since 2×201030531² = 80826548788283922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201030531.

It is not an unprimeable number, because it can be changed into a prime (201030521) 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 7 ways as a sum of consecutive naturals, for example, 2577276 + ... + 2577353.

It is an arithmetic number, because the mean of its divisors is an integer number (36082410).

Almost surely, 2^201030531 is an apocalyptic number.

201030531 is a deficient number, since it is larger than the sum of its proper divisors (87628749).

201030531 is a wasteful number, since it uses less digits than its factorization.

201030531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5154645.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 201030531 is about 14178.5235832226. The cubic root of 201030531 is about 585.8062577111.

Adding to 201030531 its reverse (135030102), we get a palindrome (336060633).

The spelling of 201030531 in words is "two hundred one million, thirty thousand, five hundred thirty-one".