213305232052520 has 64 divisors (see below), whose sum is σ = 481989484281600. Its totient is φ = 84957232308480.

The previous prime is 213305232052499. The next prime is 213305232052631. The reversal of 213305232052520 is 25250232503312.

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, 102803987 + ... + 104858333.

It is an arithmetic number, because the mean of its divisors is an integer number (7531085691900).

Almost surely, 2^{213305232052520} is an apocalyptic number.

213305232052520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213305232052520 is an abundant number, since it is smaller than the sum of its proper divisors (268684252229080).

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

213305232052520 is a wasteful number, since it uses less digits than its factorization.

213305232052520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065458 (or 2065454 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 213305232052520 its reverse (25250232503312), we get a palindrome (238555464555832).

The spelling of 213305232052520 in words is "two hundred thirteen trillion, three hundred five billion, two hundred thirty-two million, fifty-two thousand, five hundred twenty".