213623673 has 8 divisors (see below), whose sum is σ = 284947200. Its totient is φ = 142357968.

The previous prime is 213623639. The next prime is 213623677. The reversal of 213623673 is 376326312.

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

It is not a de Polignac number, because 213623673 - 2¹² = 213619577 is a prime.

It is a super-3 number, since 3×213623673³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (213623677) 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, 4938 + ... + 21251.

It is an arithmetic number, because the mean of its divisors is an integer number (35618400).

Almost surely, 2^213623673 is an apocalyptic number.

It is an amenable number.

213623673 is a deficient number, since it is larger than the sum of its proper divisors (71323527).

213623673 is a wasteful number, since it uses less digits than its factorization.

213623673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28911.

The product of its digits is 27216, while the sum is 33.

The square root of 213623673 is about 14615.8705864550. The cubic root of 213623673 is about 597.7915786537.

Adding to 213623673 its reverse (376326312), we get a palindrome (589949985).

The spelling of 213623673 in words is "two hundred thirteen million, six hundred twenty-three thousand, six hundred seventy-three".