213251232 has 96 divisors (see below), whose sum is σ = 583317504. Its totient is φ = 68140800.

The previous prime is 213251219. The next prime is 213251249. The reversal of 213251232 is 232152312.

213251232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 213251199 and 213251208.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389583 + ... + 390129.

It is an arithmetic number, because the mean of its divisors is an integer number (6076224).

Almost surely, 2^213251232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213251232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291658752).

213251232 is an abundant number, since it is smaller than the sum of its proper divisors (370066272).

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

213251232 is a wasteful number, since it uses less digits than its factorization.

213251232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722 (or 714 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 213251232 is about 14603.1240493259. The cubic root of 213251232 is about 597.4439711005.

The spelling of 213251232 in words is "two hundred thirteen million, two hundred fifty-one thousand, two hundred thirty-two".