210240305320 has 32 divisors (see below), whose sum is σ = 493607675520. Its totient is φ = 80439768640.

The previous prime is 210240305299. The next prime is 210240305333. The reversal of 210240305320 is 23503042012.

It is a junction number, because it is equal to n+sod(n) for n = 210240305291 and 210240305300.

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, 114260116 + ... + 114261955.

It is an arithmetic number, because the mean of its divisors is an integer number (15425239860).

Almost surely, 2^210240305320 is an apocalyptic number.

210240305320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210240305320 is an abundant number, since it is smaller than the sum of its proper divisors (283367370200).

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

210240305320 is a wasteful number, since it uses less digits than its factorization.

210240305320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228522105 (or 228522101 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 210240305320 its reverse (23503042012), we get a palindrome (233743347332).

The spelling of 210240305320 in words is "two hundred ten billion, two hundred forty million, three hundred five thousand, three hundred twenty".