213030556 has 6 divisors (see below), whose sum is σ = 372803480. Its totient is φ = 106515276.

The previous prime is 213030551. The next prime is 213030563. The reversal of 213030556 is 655030312.

It is a happy number.

213030556 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 213030556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213030551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26628816 + ... + 26628823.

Almost surely, 2^213030556 is an apocalyptic number.

It is an amenable number.

213030556 is a deficient number, since it is larger than the sum of its proper divisors (159772924).

213030556 is a wasteful number, since it uses less digits than its factorization.

213030556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53257643 (or 53257641 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 213030556 is about 14595.5663130966. The cubic root of 213030556 is about 597.2378182482.

Adding to 213030556 its reverse (655030312), we get a palindrome (868060868).

The spelling of 213030556 in words is "two hundred thirteen million, thirty thousand, five hundred fifty-six".