213301332 has 36 divisors (see below), whose sum is σ = 539802900. Its totient is φ = 71018112.

The previous prime is 213301331. The next prime is 213301339. The reversal of 213301332 is 233103312.

213301332 is a `hidden beast` number, since 2 + 1 + 330 + 1 + 332 = 666.

213301332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 22695696 + 190605636 = 4764^2 + 13806^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213301331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33544 + ... + 39392.

It is an arithmetic number, because the mean of its divisors is an integer number (14994525).

Almost surely, 2^213301332 is an apocalyptic number.

It is an amenable number.

213301332 is an abundant number, since it is smaller than the sum of its proper divisors (326501568).

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

213301332 is a wasteful number, since it uses less digits than its factorization.

213301332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6872 (or 6867 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 213301332 is about 14604.8393349602. The cubic root of 213301332 is about 597.4907541038.

Adding to 213301332 its reverse (233103312), we get a palindrome (446404644).

The spelling of 213301332 in words is "two hundred thirteen million, three hundred one thousand, three hundred thirty-two".