211235340 has 48 divisors (see below), whose sum is σ = 601493760. Its totient is φ = 55373760.

The previous prime is 211235327. The next prime is 211235347. The reversal of 211235340 is 43532112.

It is not an unprimeable number, because it can be changed into a prime (211235347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26296 + ... + 33375.

It is an arithmetic number, because the mean of its divisors is an integer number (12531120).

Almost surely, 2^211235340 is an apocalyptic number.

211235340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211235340 is an abundant number, since it is smaller than the sum of its proper divisors (390258420).

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

211235340 is a wasteful number, since it uses less digits than its factorization.

211235340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59742 (or 59740 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 211235340 is about 14533.9375256673. The cubic root of 211235340 is about 595.5554354832. Note that the first 3 decimals are identical.

Adding to 211235340 its reverse (43532112), we get a palindrome (254767452).

It can be divided in two parts, 211235 and 340, that added together give a triangular number (211575 = T₆₅₀).

The spelling of 211235340 in words is "two hundred eleven million, two hundred thirty-five thousand, three hundred forty".