210011231 has 2 divisors, whose sum is σ = 210011232. Its totient is φ = 210011230.

The previous prime is 210011203. The next prime is 210011233. The reversal of 210011231 is 132110012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 210011231 - 2⁶ = 210011167 is a prime.

It is a super-2 number, since 2×210011231² = 88209434292270722, which contains 22 as substring.

Together with 210011233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210011233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105005615 + 105005616.

It is an arithmetic number, because the mean of its divisors is an integer number (105005616).

Almost surely, 2^210011231 is an apocalyptic number.

210011231 is a deficient number, since it is larger than the sum of its proper divisors (1).

210011231 is an equidigital number, since it uses as much as digits as its factorization.

210011231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 210011231 is about 14491.7642473234. The cubic root of 210011231 is about 594.4027913077.

Adding to 210011231 its reverse (132110012), we get a palindrome (342121243).

It can be divided in two parts, 2100 and 11231, that added together give a palindrome (13331).

The spelling of 210011231 in words is "two hundred ten million, eleven thousand, two hundred thirty-one".