211000013 has 4 divisors (see below), whose sum is σ = 241142880. Its totient is φ = 180857148.

The previous prime is 211000007. The next prime is 211000021. The reversal of 211000013 is 310000112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211000013 - 2²⁴ = 194222797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211000033) 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, 15071423 + ... + 15071436.

It is an arithmetic number, because the mean of its divisors is an integer number (60285720).

Almost surely, 2^211000013 is an apocalyptic number.

It is an amenable number.

211000013 is a deficient number, since it is larger than the sum of its proper divisors (30142867).

211000013 is an equidigital number, since it uses as much as digits as its factorization.

211000013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30142866.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 211000013 is about 14525.8394938124. The cubic root of 211000013 is about 595.3341935404.

Adding to 211000013 its reverse (310000112), we get a palindrome (521000125).

Subtracting 211000013 from its reverse (310000112), we obtain a palindrome (99000099).

The spelling of 211000013 in words is "two hundred eleven million, thirteen", and thus it is an aban number.