213340524 has 12 divisors (see below), whose sum is σ = 497794584. Its totient is φ = 71113504.

The previous prime is 213340511. The next prime is 213340553. The reversal of 213340524 is 425043312.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 213340494 and 213340503.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8889177 + ... + 8889200.

It is an arithmetic number, because the mean of its divisors is an integer number (41482882).

Almost surely, 2^213340524 is an apocalyptic number.

It is an amenable number.

213340524 is an abundant number, since it is smaller than the sum of its proper divisors (284454060).

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

213340524 is a wasteful number, since it uses less digits than its factorization.

213340524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17778384 (or 17778382 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 213340524 is about 14606.1810203763. The cubic root of 213340524 is about 597.5273461921.

Adding to 213340524 its reverse (425043312), we get a palindrome (638383836).

The spelling of 213340524 in words is "two hundred thirteen million, three hundred forty thousand, five hundred twenty-four".