201030231 has 4 divisors (see below), whose sum is σ = 268040312. Its totient is φ = 134020152.

The previous prime is 201030229. The next prime is 201030251. The reversal of 201030231 is 132030102.

It is a happy number.

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

It is not a de Polignac number, because 201030231 - 2¹ = 201030229 is a prime.

It is a super-2 number, since 2×201030231² = 80826307551826722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201030251) 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, 33505036 + ... + 33505041.

It is an arithmetic number, because the mean of its divisors is an integer number (67010078).

Almost surely, 2^201030231 is an apocalyptic number.

201030231 is a deficient number, since it is larger than the sum of its proper divisors (67010081).

201030231 is an equidigital number, since it uses as much as digits as its factorization.

201030231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67010080.

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

The square root of 201030231 is about 14178.5130038379. The cubic root of 201030231 is about 585.8059663093.

Adding to 201030231 its reverse (132030102), we get a palindrome (333060333).

The spelling of 201030231 in words is "two hundred one million, thirty thousand, two hundred thirty-one".