213193212 has 24 divisors (see below), whose sum is σ = 498078336. Its totient is φ = 70974768.

The previous prime is 213193177. The next prime is 213193217. The reversal of 213193212 is 212391312.

213193212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213193217) 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, 918 + ... + 20669.

It is an arithmetic number, because the mean of its divisors is an integer number (20753264).

Almost surely, 2^213193212 is an apocalyptic number.

It is an amenable number.

213193212 is an abundant number, since it is smaller than the sum of its proper divisors (284885124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213193212 is a wasteful number, since it uses less digits than its factorization.

213193212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22417 (or 22415 counting only the distinct ones).

The product of its digits is 648, while the sum is 24.

The square root of 213193212 is about 14601.1373529599. The cubic root of 213193212 is about 597.3897833036.

It can be divided in two parts, 21319 and 3212, that added together give a triangular number (24531 = T₂₂₁).

The spelling of 213193212 in words is "two hundred thirteen million, one hundred ninety-three thousand, two hundred twelve".