213110312304340 has 96 divisors (see below), whose sum is σ = 494312227516800. Its totient is φ = 76529212446720.

The previous prime is 213110312304293. The next prime is 213110312304397. The reversal of 213110312304340 is 43403213011312.

It is a junction number, because it is equal to n+sod(n) for n = 213110312304299 and 213110312304308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9113347 + ... + 22567093.

It is an arithmetic number, because the mean of its divisors is an integer number (5149085703300).

Almost surely, 2^{213110312304340} is an apocalyptic number.

213110312304340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213110312304340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247156113758400).

213110312304340 is an abundant number, since it is smaller than the sum of its proper divisors (281201915212460).

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

213110312304340 is a wasteful number, since it uses less digits than its factorization.

213110312304340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13454665 (or 13454663 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 213110312304340 its reverse (43403213011312), we get a palindrome (256513525315652).

The spelling of 213110312304340 in words is "two hundred thirteen trillion, one hundred ten billion, three hundred twelve million, three hundred four thousand, three hundred forty".