213044231 has 8 divisors (see below), whose sum is σ = 218194944. Its totient is φ = 207902520.

The previous prime is 213044219. The next prime is 213044257. The reversal of 213044231 is 132440312.

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-213044231 is a prime.

It is a super-2 number, since 2×213044231² = 90775688724762722, 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 (213044831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89600 + ... + 91946.

It is an arithmetic number, because the mean of its divisors is an integer number (27274368).

Almost surely, 2^213044231 is an apocalyptic number.

213044231 is a deficient number, since it is larger than the sum of its proper divisors (5150713).

213044231 is a wasteful number, since it uses less digits than its factorization.

213044231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4501.

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

The square root of 213044231 is about 14596.0347697585. The cubic root of 213044231 is about 597.2505974046.

Adding to 213044231 its reverse (132440312), we get a palindrome (345484543).

The spelling of 213044231 in words is "two hundred thirteen million, forty-four thousand, two hundred thirty-one".