211013340 has 24 divisors (see below), whose sum is σ = 590837520. Its totient is φ = 56270208.

The previous prime is 211013329. The next prime is 211013371. The reversal of 211013340 is 43310112.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1758385 + ... + 1758504.

It is an arithmetic number, because the mean of its divisors is an integer number (24618230).

Almost surely, 2^211013340 is an apocalyptic number.

211013340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211013340 is an abundant number, since it is smaller than the sum of its proper divisors (379824180).

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

211013340 is a wasteful number, since it uses less digits than its factorization.

211013340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3516901 (or 3516899 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 211013340 is about 14526.2982208132. The cubic root of 211013340 is about 595.3467272706.

Adding to 211013340 its reverse (43310112), we get a palindrome (254323452).

The spelling of 211013340 in words is "two hundred eleven million, thirteen thousand, three hundred forty".