210423013 has 2 divisors, whose sum is σ = 210423014. Its totient is φ = 210423012.

The previous prime is 210423007. The next prime is 210423041. The reversal of 210423013 is 310324012.

It is a happy number.

210423013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112848129 + 97574884 = 10623^2 + 9878^2 .

It is a cyclic number.

It is not a de Polignac number, because 210423013 - 2⁹ = 210422501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210423413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105211506 + 105211507.

It is an arithmetic number, because the mean of its divisors is an integer number (105211507).

Almost surely, 2^210423013 is an apocalyptic number.

It is an amenable number.

210423013 is a deficient number, since it is larger than the sum of its proper divisors (1).

210423013 is an equidigital number, since it uses as much as digits as its factorization.

210423013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 210423013 is about 14505.9647386859. The cubic root of 210423013 is about 594.7910317654.

Adding to 210423013 its reverse (310324012), we get a palindrome (520747025).

Subtracting 210423013 from its reverse (310324012), we obtain a palindrome (99900999).

The spelling of 210423013 in words is "two hundred ten million, four hundred twenty-three thousand, thirteen".