211240013 has 8 divisors (see below), whose sum is σ = 212921856. Its totient is φ = 209563200.

The previous prime is 211239997. The next prime is 211240021. The reversal of 211240013 is 310042112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211240013 - 2⁴ = 211239997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211240013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211242013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142868 + ... + 144338.

It is an arithmetic number, because the mean of its divisors is an integer number (26615232).

Almost surely, 2^211240013 is an apocalyptic number.

It is an amenable number.

211240013 is a deficient number, since it is larger than the sum of its proper divisors (1681843).

211240013 is a wasteful number, since it uses less digits than its factorization.

211240013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 211240013 is about 14534.0982864435. The cubic root of 211240013 is about 595.5598271253.

Adding to 211240013 its reverse (310042112), we get a palindrome (521282125).

The spelling of 211240013 in words is "two hundred eleven million, two hundred forty thousand, thirteen".