213173653 has 8 divisors (see below), whose sum is σ = 265775040. Its totient is φ = 166109280.

The previous prime is 213173647. The next prime is 213173669. The reversal of 213173653 is 356371312.

213173653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213173653 - 2⁵ = 213173621 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 (213173633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1384168 + ... + 1384321.

It is an arithmetic number, because the mean of its divisors is an integer number (33221880).

Almost surely, 2^213173653 is an apocalyptic number.

It is an amenable number.

213173653 is a deficient number, since it is larger than the sum of its proper divisors (52601387).

213173653 is a wasteful number, since it uses less digits than its factorization.

213173653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768507.

The product of its digits is 11340, while the sum is 31.

The square root of 213173653 is about 14600.4675610064. The cubic root of 213173653 is about 597.3715139537.

The spelling of 213173653 in words is "two hundred thirteen million, one hundred seventy-three thousand, six hundred fifty-three".