213331194 has 24 divisors (see below), whose sum is σ = 465596820. Its totient is φ = 70590528.

The previous prime is 213331193. The next prime is 213331207. The reversal of 213331194 is 491133312.

It can be written as a sum of positive squares in 2 ways, for example, as 211266225 + 2064969 = 14535^2 + 1437^2 .

It is not an unprimeable number, because it can be changed into a prime (213331193) 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 11 ways as a sum of consecutive naturals, for example, 40789 + ... + 45720.

Almost surely, 2^213331194 is an apocalyptic number.

213331194 is an abundant number, since it is smaller than the sum of its proper divisors (252265626).

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

213331194 is a wasteful number, since it uses less digits than its factorization.

213331194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86654 (or 86651 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 213331194 is about 14605.8616315505. The cubic root of 213331194 is about 597.5186355304.

The spelling of 213331194 in words is "two hundred thirteen million, three hundred thirty-one thousand, one hundred ninety-four".