212303312 has 20 divisors (see below), whose sum is σ = 442979460. Its totient is φ = 97986048.

The previous prime is 212303303. The next prime is 212303387. The reversal of 212303312 is 213303212.

It can be written as a sum of positive squares in 2 ways, for example, as 21752896 + 190550416 = 4664^2 + 13804^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510137 + ... + 510552.

It is an arithmetic number, because the mean of its divisors is an integer number (22148973).

Almost surely, 2^212303312 is an apocalyptic number.

It is an amenable number.

212303312 is an abundant number, since it is smaller than the sum of its proper divisors (230676148).

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

212303312 is a wasteful number, since it uses less digits than its factorization.

212303312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020710 (or 1020704 counting only the distinct ones).

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

The square root of 212303312 is about 14570.6318325596. The cubic root of 212303312 is about 596.5574263285.

Adding to 212303312 its reverse (213303212), we get a palindrome (425606524).

It can be divided in two parts, 21230 and 3312, that added together give a palindrome (24542).

The spelling of 212303312 in words is "two hundred twelve million, three hundred three thousand, three hundred twelve".