213505124 has 24 divisors (see below), whose sum is σ = 434013888. Its totient is φ = 90001440.

The previous prime is 213505121. The next prime is 213505139. The reversal of 213505124 is 421505312.

213505124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 213505124.

It is not an unprimeable number, because it can be changed into a prime (213505121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60794 + ... + 64209.

It is an arithmetic number, because the mean of its divisors is an integer number (18083912).

Almost surely, 2^213505124 is an apocalyptic number.

It is an amenable number.

213505124 is an abundant number, since it is smaller than the sum of its proper divisors (220508764).

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

213505124 is a wasteful number, since it uses less digits than its factorization.

213505124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125075 (or 125073 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 213505124 is about 14611.8145348208. The cubic root of 213505124 is about 597.6809780727.

The spelling of 213505124 in words is "two hundred thirteen million, five hundred five thousand, one hundred twenty-four".