210030231 has 4 divisors (see below), whose sum is σ = 280040312. Its totient is φ = 140020152.

The previous prime is 210030229. The next prime is 210030253. The reversal of 210030231 is 132030012.

It is a happy number.

210030231 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 not a de Polignac number, because 210030231 - 2¹ = 210030229 is a prime.

It is a super-2 number, since 2×210030231² = 88225395867826722, 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 (210030211) 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, 35005036 + ... + 35005041.

It is an arithmetic number, because the mean of its divisors is an integer number (70010078).

Almost surely, 2^210030231 is an apocalyptic number.

210030231 is a deficient number, since it is larger than the sum of its proper divisors (70010081).

210030231 is an equidigital number, since it uses as much as digits as its factorization.

210030231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70010080.

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

The square root of 210030231 is about 14492.4197772491. The cubic root of 210030231 is about 594.4207162418.

Adding to 210030231 its reverse (132030012), we get a palindrome (342060243).

The spelling of 210030231 in words is "two hundred ten million, thirty thousand, two hundred thirty-one".