210013231 has 2 divisors, whose sum is σ = 210013232. Its totient is φ = 210013230.

The previous prime is 210013217. The next prime is 210013259. The reversal of 210013231 is 132310012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210013231 - 2⁷ = 210013103 is a prime.

It is a super-2 number, since 2×210013231² = 88211114390118722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210013201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105006615 + 105006616.

It is an arithmetic number, because the mean of its divisors is an integer number (105006616).

Almost surely, 2^210013231 is an apocalyptic number.

210013231 is a deficient number, since it is larger than the sum of its proper divisors (1).

210013231 is an equidigital number, since it uses as much as digits as its factorization.

210013231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 210013231 is about 14491.8332518698. The cubic root of 210013231 is about 594.4046781937.

Adding to 210013231 its reverse (132310012), we get a palindrome (342323243).

The spelling of 210013231 in words is "two hundred ten million, thirteen thousand, two hundred thirty-one".