213031230 has 64 divisors (see below), whose sum is σ = 540691200. Its totient is φ = 53568000.

The previous prime is 213031223. The next prime is 213031271. The reversal of 213031230 is 32130312.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142326 + ... + 143814.

It is an arithmetic number, because the mean of its divisors is an integer number (8448300).

Almost surely, 2^213031230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213031230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270345600).

213031230 is an abundant number, since it is smaller than the sum of its proper divisors (327659970).

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

213031230 is a wasteful number, since it uses less digits than its factorization.

213031230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 213031230 is about 14595.5894022818. The cubic root of 213031230 is about 597.2384481075.

Adding to 213031230 its reverse (32130312), we get a palindrome (245161542).

The spelling of 213031230 in words is "two hundred thirteen million, thirty-one thousand, two hundred thirty".