212304004340 has 48 divisors (see below), whose sum is σ = 453239539200. Its totient is φ = 83520233472.

The previous prime is 212304004313. The next prime is 212304004349. The reversal of 212304004340 is 43400403212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212304004349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144641 + ... + 667479.

It is an arithmetic number, because the mean of its divisors is an integer number (9442490400).

Almost surely, 2^212304004340 is an apocalyptic number.

212304004340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212304004340 is an abundant number, since it is smaller than the sum of its proper divisors (240935534860).

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

212304004340 is a wasteful number, since it uses less digits than its factorization.

212304004340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523184 (or 523182 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 212304004340 its reverse (43400403212), we get a palindrome (255704407552).

The spelling of 212304004340 in words is "two hundred twelve billion, three hundred four million, four thousand, three hundred forty".