211130013 has 4 divisors (see below), whose sum is σ = 281506688. Its totient is φ = 140753340.

The previous prime is 211130009. The next prime is 211130027. The reversal of 211130013 is 310031112.

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 not a de Polignac number, because 211130013 - 2² = 211130009 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 (211130053) 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, 35188333 + ... + 35188338.

It is an arithmetic number, because the mean of its divisors is an integer number (70376672).

Almost surely, 2^211130013 is an apocalyptic number.

It is an amenable number.

211130013 is a deficient number, since it is larger than the sum of its proper divisors (70376675).

211130013 is an equidigital number, since it uses as much as digits as its factorization.

211130013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70376674.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 211130013 is about 14530.3135891831. The cubic root of 211130013 is about 595.4564329581.

Adding to 211130013 its reverse (310031112), we get a palindrome (521161125).

The spelling of 211130013 in words is "two hundred eleven million, one hundred thirty thousand, thirteen".