213246823 has 8 divisors (see below), whose sum is σ = 234230400. Its totient is φ = 193239288.

The previous prime is 213246821. The next prime is 213246829. The reversal of 213246823 is 328642312.

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

It is a cyclic number.

It is not a de Polignac number, because 213246823 - 2¹ = 213246821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213246821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243553 + ... + 244426.

It is an arithmetic number, because the mean of its divisors is an integer number (29278800).

Almost surely, 2^213246823 is an apocalyptic number.

213246823 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

213246823 is a deficient number, since it is larger than the sum of its proper divisors (20983577).

213246823 is a wasteful number, since it uses less digits than its factorization.

213246823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488021.

The product of its digits is 13824, while the sum is 31.

The square root of 213246823 is about 14602.9730876969. The cubic root of 213246823 is about 597.4398536587.

The spelling of 213246823 in words is "two hundred thirteen million, two hundred forty-six thousand, eight hundred twenty-three".