213228930 has 16 divisors (see below), whose sum is σ = 511749504. Its totient is φ = 56861040.

The previous prime is 213228913. The next prime is 213228937. The reversal of 213228930 is 39822312.

It is a happy number.

213228930 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 7107631 = 213228930 / (2 + 1 + 3 + 2 + 2 + 8 + 9 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (213228937) 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, 3553786 + ... + 3553845.

It is an arithmetic number, because the mean of its divisors is an integer number (31984344).

Almost surely, 2^213228930 is an apocalyptic number.

213228930 is an abundant number, since it is smaller than the sum of its proper divisors (298520574).

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

213228930 is a wasteful number, since it uses less digits than its factorization.

213228930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7107641.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 213228930 is about 14602.3604256298. The cubic root of 213228930 is about 597.4231433037.

The spelling of 213228930 in words is "two hundred thirteen million, two hundred twenty-eight thousand, nine hundred thirty".