210232013 has 4 divisors (see below), whose sum is σ = 222598620. Its totient is φ = 197865408.

The previous prime is 210231977. The next prime is 210232019. The reversal of 210232013 is 310232012.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 99940009 + 110292004 = 9997^2 + 10502^2 .

It is a cyclic number.

It is not a de Polignac number, because 210232013 - 2¹² = 210227917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210232019) 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, 6183278 + ... + 6183311.

It is an arithmetic number, because the mean of its divisors is an integer number (55649655).

Almost surely, 2^210232013 is an apocalyptic number.

It is an amenable number.

210232013 is a deficient number, since it is larger than the sum of its proper divisors (12366607).

210232013 is a wasteful number, since it uses less digits than its factorization.

210232013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12366606.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 210232013 is about 14499.3797453546. The cubic root of 210232013 is about 594.6110142605.

Adding to 210232013 its reverse (310232012), we get a palindrome (520464025).

Subtracting 210232013 from its reverse (310232012), we obtain a palindrome (99999999).

The spelling of 210232013 in words is "two hundred ten million, two hundred thirty-two thousand, thirteen".