213313044 has 24 divisors (see below), whose sum is σ = 568835008. Its totient is φ = 60946560.

The previous prime is 213313031. The next prime is 213313049. The reversal of 213313044 is 440313312.

213313044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 213313044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213313049) 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, 1269637 + ... + 1269804.

Almost surely, 2^213313044 is an apocalyptic number.

It is an amenable number.

213313044 is an abundant number, since it is smaller than the sum of its proper divisors (355521964).

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

213313044 is a wasteful number, since it uses less digits than its factorization.

213313044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539455 (or 2539453 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 213313044 is about 14605.2402924430. The cubic root of 213313044 is about 597.5016896248.

Adding to 213313044 its reverse (440313312), we get a palindrome (653626356).

The spelling of 213313044 in words is "two hundred thirteen million, three hundred thirteen thousand, forty-four".