211423000 has 64 divisors (see below), whose sum is σ = 499374720. Its totient is φ = 83776000.

The previous prime is 211422979. The next prime is 211423063. The reversal of 211423000 is 324112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112065 + ... + 113935.

It is an arithmetic number, because the mean of its divisors is an integer number (7802730).

Almost surely, 2^211423000 is an apocalyptic number.

211423000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211423000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249687360).

211423000 is an abundant number, since it is smaller than the sum of its proper divisors (287951720).

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

211423000 is a wasteful number, since it uses less digits than its factorization.

211423000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005 (or 1991 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 211423000 is about 14540.3920167236. The cubic root of 211423000 is about 595.7317457117.

Adding to 211423000 its reverse (324112), we get a palindrome (211747112).

It can be divided in two parts, 21142 and 3000, that added together give a palindrome (24142).

The spelling of 211423000 in words is "two hundred eleven million, four hundred twenty-three thousand".