212431552 has 56 divisors (see below), whose sum is σ = 448553840. Its totient is φ = 99532800.

The previous prime is 212431547. The next prime is 212431573. The reversal of 212431552 is 255134212.

It is a super-3 number, since 3×212431552³ (a number of 26 digits) contains 333 as substring.

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, 117052 + ... + 118852.

It is an arithmetic number, because the mean of its divisors is an integer number (8009890).

Almost surely, 2^212431552 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 212431552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224276920).

212431552 is an abundant number, since it is smaller than the sum of its proper divisors (236122288).

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

212431552 is a wasteful number, since it uses less digits than its factorization.

212431552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929 (or 1919 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 212431552 is about 14575.0318009945. The cubic root of 212431552 is about 596.6775172890.

Adding to 212431552 its reverse (255134212), we get a palindrome (467565764).

The spelling of 212431552 in words is "two hundred twelve million, four hundred thirty-one thousand, five hundred fifty-two".