213204030 has 32 divisors (see below), whose sum is σ = 551051424. Its totient is φ = 52480896.

The previous prime is 213204007. The next prime is 213204037. The reversal of 213204030 is 30402312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213204037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272949 + ... + 273728.

It is an arithmetic number, because the mean of its divisors is an integer number (17220357).

Almost surely, 2^213204030 is an apocalyptic number.

213204030 is an abundant number, since it is smaller than the sum of its proper divisors (337847394).

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

213204030 is a wasteful number, since it uses less digits than its factorization.

213204030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546700.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 213204030 is about 14601.5077988542. The cubic root of 213204030 is about 597.3998875236.

Adding to 213204030 its reverse (30402312), we get a palindrome (243606342).

The spelling of 213204030 in words is "two hundred thirteen million, two hundred four thousand, thirty".