213124430 has 16 divisors (see below), whose sum is σ = 387145440. Its totient is φ = 84467232.

The previous prime is 213124369. The next prime is 213124433. The reversal of 213124430 is 34421312.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213124433) 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, 96674 + ... + 98853.

It is an arithmetic number, because the mean of its divisors is an integer number (24196590).

Almost surely, 2^213124430 is an apocalyptic number.

213124430 is a deficient number, since it is larger than the sum of its proper divisors (174021010).

213124430 is a wasteful number, since it uses less digits than its factorization.

213124430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195643.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 213124430 is about 14598.7817984926. The cubic root of 213124430 is about 597.3255315960.

Adding to 213124430 its reverse (34421312), we get a palindrome (247545742).

The spelling of 213124430 in words is "two hundred thirteen million, one hundred twenty-four thousand, four hundred thirty".