213130556 has 12 divisors (see below), whose sum is σ = 373488360. Its totient is φ = 106419600.

The previous prime is 213130537. The next prime is 213130573. The reversal of 213130556 is 655031312.

213130556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 33095 + ... + 39006.

It is an arithmetic number, because the mean of its divisors is an integer number (31124030).

Almost surely, 2^213130556 is an apocalyptic number.

It is an amenable number.

213130556 is a deficient number, since it is larger than the sum of its proper divisors (160357804).

213130556 is a wasteful number, since it uses less digits than its factorization.

213130556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72844 (or 72842 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 213130556 is about 14598.9916090119. The cubic root of 213130556 is about 597.3312546707.

Adding to 213130556 its reverse (655031312), we get a palindrome (868161868).

The spelling of 213130556 in words is "two hundred thirteen million, one hundred thirty thousand, five hundred fifty-six".