211245340 has 24 divisors (see below), whose sum is σ = 462903840. Its totient is φ = 80824128.

The previous prime is 211245337. The next prime is 211245341. The reversal of 211245340 is 43542112.

211245340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211245341) 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, 229155 + ... + 230074.

It is an arithmetic number, because the mean of its divisors is an integer number (19287660).

Almost surely, 2^211245340 is an apocalyptic number.

211245340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211245340 is an abundant number, since it is smaller than the sum of its proper divisors (251658500).

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

211245340 is a wasteful number, since it uses less digits than its factorization.

211245340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459261 (or 459259 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 211245340 is about 14534.2815439911. The cubic root of 211245340 is about 595.5648333115.

Adding to 211245340 its reverse (43542112), we get a palindrome (254787452).

The spelling of 211245340 in words is "two hundred eleven million, two hundred forty-five thousand, three hundred forty".