211671340 has 12 divisors (see below), whose sum is σ = 444509856. Its totient is φ = 84668528.

The previous prime is 211671329. The next prime is 211671349. The reversal of 211671340 is 43176112.

211671340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (211671349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5291764 + ... + 5291803.

It is an arithmetic number, because the mean of its divisors is an integer number (37042488).

Almost surely, 2^211671340 is an apocalyptic number.

211671340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211671340 is an abundant number, since it is smaller than the sum of its proper divisors (232838516).

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

211671340 is a wasteful number, since it uses less digits than its factorization.

211671340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10583576 (or 10583574 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 211671340 is about 14548.9291702173. The cubic root of 211671340 is about 595.9649056705.

The spelling of 211671340 in words is "two hundred eleven million, six hundred seventy-one thousand, three hundred forty".