211403341540 has 48 divisors (see below), whose sum is σ = 478180422720. Its totient is φ = 78247693440.

The previous prime is 211403341517. The next prime is 211403341601. The reversal of 211403341540 is 45143304112.

It is a junction number, because it is equal to n+sod(n) for n = 211403341499 and 211403341508.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6452551 + ... + 6485230.

It is an arithmetic number, because the mean of its divisors is an integer number (9962092140).

Almost surely, 2^211403341540 is an apocalyptic number.

211403341540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211403341540 is an abundant number, since it is smaller than the sum of its proper divisors (266777081180).

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

211403341540 is a wasteful number, since it uses less digits than its factorization.

211403341540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12937852 (or 12937850 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 211403341540 its reverse (45143304112), we get a palindrome (256546645652).

The spelling of 211403341540 in words is "two hundred eleven billion, four hundred three million, three hundred forty-one thousand, five hundred forty".