213240230 has 64 divisors (see below), whose sum is σ = 468840960. Its totient is φ = 68200704.

The previous prime is 213240149. The next prime is 213240281. The reversal of 213240230 is 32042312.

It is a junction number, because it is equal to n+sod(n) for n = 213240199 and 213240208.

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, 87914 + ... + 90306.

It is an arithmetic number, because the mean of its divisors is an integer number (7325640).

Almost surely, 2^213240230 is an apocalyptic number.

213240230 is an abundant number, since it is smaller than the sum of its proper divisors (255600730).

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

213240230 is a wasteful number, since it uses less digits than its factorization.

213240230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2493.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 213240230 is about 14602.7473442500. The cubic root of 213240230 is about 597.4336965344.

Adding to 213240230 its reverse (32042312), we get a palindrome (245282542).

The spelling of 213240230 in words is "two hundred thirteen million, two hundred forty thousand, two hundred thirty".