213123232 has 48 divisors (see below), whose sum is σ = 480513600. Its totient is φ = 91150848.

The previous prime is 213123223. The next prime is 213123241. The reversal of 213123232 is 232321312.

It is an interprime number because it is at equal distance from previous prime (213123223) and next prime (213123241).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202644 + ... + 203692.

It is an arithmetic number, because the mean of its divisors is an integer number (10010700).

Almost surely, 2^213123232 is an apocalyptic number.

It is an amenable number.

213123232 is an abundant number, since it is smaller than the sum of its proper divisors (267390368).

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

213123232 is a wasteful number, since it uses less digits than its factorization.

213123232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973 (or 1965 counting only the distinct ones).

The product of its digits is 432, while the sum is 19.

The square root of 213123232 is about 14598.7407676142. The cubic root of 213123232 is about 597.3244123792.

Adding to 213123232 its reverse (232321312), we get a palindrome (445444544).

The spelling of 213123232 in words is "two hundred thirteen million, one hundred twenty-three thousand, two hundred thirty-two".