211430011 has 8 divisors (see below), whose sum is σ = 232989680. Its totient is φ = 190626912.

The previous prime is 211429987. The next prime is 211430029. The reversal of 211430011 is 110034112.

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

It is not a de Polignac number, because 211430011 - 2²¹ = 209332859 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211429973 and 211430000.

It is not an unprimeable number, because it can be changed into a prime (211430311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188556 + ... + 189673.

It is an arithmetic number, because the mean of its divisors is an integer number (29123710).

Almost surely, 2^211430011 is an apocalyptic number.

211430011 is a deficient number, since it is larger than the sum of its proper divisors (21559669).

211430011 is a wasteful number, since it uses less digits than its factorization.

211430011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378285.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 211430011 is about 14540.6331017600. The cubic root of 211430011 is about 595.7383306608.

Adding to 211430011 its reverse (110034112), we get a palindrome (321464123).

The spelling of 211430011 in words is "two hundred eleven million, four hundred thirty thousand, eleven".