213314444 has 72 divisors (see below), whose sum is σ = 461180160. Its totient is φ = 86090256.

The previous prime is 213314383. The next prime is 213314447. The reversal of 213314444 is 444413312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213314447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1277249 + ... + 1277415.

It is an arithmetic number, because the mean of its divisors is an integer number (6405280).

Almost surely, 2^213314444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213314444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230590080).

213314444 is an abundant number, since it is smaller than the sum of its proper divisors (247865716).

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

213314444 is an equidigital number, since it uses as much as digits as its factorization.

213314444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 195 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 213314444 is about 14605.2882203673. The cubic root of 213314444 is about 597.5029967812.

Adding to 213314444 its reverse (444413312), we get a palindrome (657727756).

The spelling of 213314444 in words is "two hundred thirteen million, three hundred fourteen thousand, four hundred forty-four".