210231213 has 16 divisors (see below), whose sum is σ = 285005952. Its totient is φ = 137816000.

The previous prime is 210231211. The next prime is 210231223. The reversal of 210231213 is 312132012.

It is a cyclic number.

It is not a de Polignac number, because 210231213 - 2¹ = 210231211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210231192 and 210231201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210231211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97123 + ... + 99263.

It is an arithmetic number, because the mean of its divisors is an integer number (17812872).

Almost surely, 2^210231213 is an apocalyptic number.

It is an amenable number.

210231213 is a deficient number, since it is larger than the sum of its proper divisors (74774739).

210231213 is a wasteful number, since it uses less digits than its factorization.

210231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 210231213 is about 14499.3521579414. The cubic root of 210231213 is about 594.6102600312.

Adding to 210231213 its reverse (312132012), we get a palindrome (522363225).

The spelling of 210231213 in words is "two hundred ten million, two hundred thirty-one thousand, two hundred thirteen".