211280034 has 16 divisors (see below), whose sum is σ = 482925888. Its totient is φ = 60365712.

The previous prime is 211280021. The next prime is 211280039. The reversal of 211280034 is 430082112.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (211280039) 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, 2515197 + ... + 2515280.

It is an arithmetic number, because the mean of its divisors is an integer number (30182868).

Almost surely, 2^211280034 is an apocalyptic number.

211280034 is an abundant number, since it is smaller than the sum of its proper divisors (271645854).

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

211280034 is a wasteful number, since it uses less digits than its factorization.

211280034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5030489.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 211280034 is about 14535.4750180378. The cubic root of 211280034 is about 595.5974358378.

The spelling of 211280034 in words is "two hundred eleven million, two hundred eighty thousand, thirty-four".