213172333 has 8 divisors (see below), whose sum is σ = 246231360. Its totient is φ = 182393280.

The previous prime is 213172291. The next prime is 213172339. The reversal of 213172333 is 333271312.

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 213172333 - 2¹⁷ = 213041261 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213172298 and 213172307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213172339) 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, 569793 + ... + 570166.

It is an arithmetic number, because the mean of its divisors is an integer number (30778920).

Almost surely, 2^213172333 is an apocalyptic number.

It is an amenable number.

213172333 is a deficient number, since it is larger than the sum of its proper divisors (33059027).

213172333 is a wasteful number, since it uses less digits than its factorization.

213172333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139987.

The product of its digits is 2268, while the sum is 25.

The square root of 213172333 is about 14600.4223569046. The cubic root of 213172333 is about 597.3702809495.

The spelling of 213172333 in words is "two hundred thirteen million, one hundred seventy-two thousand, three hundred thirty-three".