211430034 has 16 divisors (see below), whose sum is σ = 469844640. Its totient is φ = 70476660.

The previous prime is 211430033. The next prime is 211430069. The reversal of 211430034 is 430034112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 211429989 and 211430016.

It is not an unprimeable number, because it can be changed into a prime (211430033) 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, 1957632 + ... + 1957739.

It is an arithmetic number, because the mean of its divisors is an integer number (29365290).

Almost surely, 2^211430034 is an apocalyptic number.

211430034 is an abundant number, since it is smaller than the sum of its proper divisors (258414606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211430034 is a wasteful number, since it uses less digits than its factorization.

211430034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3915382 (or 3915376 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 211430034 is about 14540.6338926472. The cubic root of 211430034 is about 595.7383522629.

Adding to 211430034 its reverse (430034112), we get a palindrome (641464146).

The spelling of 211430034 in words is "two hundred eleven million, four hundred thirty thousand, thirty-four".