213213032 has 8 divisors (see below), whose sum is σ = 399774450. Its totient is φ = 106606512.

The previous prime is 213213029. The next prime is 213213037. The reversal of 213213032 is 230312312.

It can be written as a sum of positive squares in only one way, i.e., 146071396 + 67141636 = 12086^2 + 8194^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 213213032.

It is not an unprimeable number, because it can be changed into a prime (213213037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13325807 + ... + 13325822.

Almost surely, 2^213213032 is an apocalyptic number.

It is an amenable number.

213213032 is a deficient number, since it is larger than the sum of its proper divisors (186561418).

213213032 is a wasteful number, since it uses less digits than its factorization.

213213032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26651635 (or 26651631 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 213213032 is about 14601.8160514369. The cubic root of 213213032 is about 597.4082953042.

Adding to 213213032 its reverse (230312312), we get a palindrome (443525344).

The spelling of 213213032 in words is "two hundred thirteen million, two hundred thirteen thousand, thirty-two".