213605423 has 8 divisors (see below), whose sum is σ = 218785536. Its totient is φ = 208468000.

The previous prime is 213605419. The next prime is 213605437. The reversal of 213605423 is 324506312.

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 213605423 - 2² = 213605419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213605392 and 213605401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213605443) 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, 428 + ... + 20673.

It is an arithmetic number, because the mean of its divisors is an integer number (27348192).

Almost surely, 2^213605423 is an apocalyptic number.

213605423 is a deficient number, since it is larger than the sum of its proper divisors (5180113).

213605423 is a wasteful number, since it uses less digits than its factorization.

213605423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21345.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 213605423 is about 14615.2462517742. The cubic root of 213605423 is about 597.7745549365.

The spelling of 213605423 in words is "two hundred thirteen million, six hundred five thousand, four hundred twenty-three".