211003013 has 4 divisors (see below), whose sum is σ = 227234028. Its totient is φ = 194772000.

The previous prime is 211002949. The next prime is 211003027. The reversal of 211003013 is 310300112.

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 76860289 + 134142724 = 8767^2 + 11582^2 .

It is a cyclic number.

It is not a de Polignac number, because 211003013 - 2⁶ = 211002949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211002985 and 211003003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211003063) 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 3 ways as a sum of consecutive naturals, for example, 8115488 + ... + 8115513.

It is an arithmetic number, because the mean of its divisors is an integer number (56808507).

Almost surely, 2^211003013 is an apocalyptic number.

It is an amenable number.

211003013 is a deficient number, since it is larger than the sum of its proper divisors (16231015).

211003013 is a wasteful number, since it uses less digits than its factorization.

211003013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16231014.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 211003013 is about 14525.9427577008. The cubic root of 211003013 is about 595.3370150159.

Adding to 211003013 its reverse (310300112), we get a palindrome (521303125).

The spelling of 211003013 in words is "two hundred eleven million, three thousand, thirteen".