211314404240 has 40 divisors (see below), whose sum is σ = 492290664000. Its totient is φ = 84356355456.

The previous prime is 211314404209. The next prime is 211314404299. The reversal of 211314404240 is 42404413112.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×211314404240² (a number of 23 digits) contains 22 as substring.

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, 2606804 + ... + 2686643.

It is an arithmetic number, because the mean of its divisors is an integer number (12307266600).

Almost surely, 2^211314404240 is an apocalyptic number.

211314404240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211314404240 is an abundant number, since it is smaller than the sum of its proper divisors (280976259760).

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

211314404240 is a wasteful number, since it uses less digits than its factorization.

211314404240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5293959 (or 5293953 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 211314404240 its reverse (42404413112), we get a palindrome (253718817352).

The spelling of 211314404240 in words is "two hundred eleven billion, three hundred fourteen million, four hundred four thousand, two hundred forty".