213021532 has 6 divisors (see below), whose sum is σ = 372787688. Its totient is φ = 106510764.

The previous prime is 213021517. The next prime is 213021551. The reversal of 213021532 is 235120312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26627688 + ... + 26627695.

Almost surely, 2^213021532 is an apocalyptic number.

It is an amenable number.

213021532 is a deficient number, since it is larger than the sum of its proper divisors (159766156).

213021532 is a wasteful number, since it uses less digits than its factorization.

213021532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53255387 (or 53255385 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 213021532 is about 14595.2571748496. The cubic root of 213021532 is about 597.2293851071.

Adding to 213021532 its reverse (235120312), we get a palindrome (448141844).

The spelling of 213021532 in words is "two hundred thirteen million, twenty-one thousand, five hundred thirty-two".