213824831 has 8 divisors (see below), whose sum is σ = 233400528. Its totient is φ = 194272000.

The previous prime is 213824789. The next prime is 213824833. The reversal of 213824831 is 138428312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213824831 is a prime.

It is a super-2 number, since 2×213824831² = 91442116704357122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213824833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18221 + ... + 27561.

It is an arithmetic number, because the mean of its divisors is an integer number (29175066).

Almost surely, 2^213824831 is an apocalyptic number.

213824831 is a deficient number, since it is larger than the sum of its proper divisors (19575697).

213824831 is a wasteful number, since it uses less digits than its factorization.

213824831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11433.

The product of its digits is 9216, while the sum is 32.

The square root of 213824831 is about 14622.7504594724. The cubic root of 213824831 is about 597.9791559197.

The spelling of 213824831 in words is "two hundred thirteen million, eight hundred twenty-four thousand, eight hundred thirty-one".