212887312 has 20 divisors (see below), whose sum is σ = 449966736. Its totient is φ = 96766880.

The previous prime is 212887309. The next prime is 212887349. The reversal of 212887312 is 213788212.

It is a super-2 number, since 2×212887312² = 90642015221170688, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604618 + ... + 604969.

Almost surely, 2^212887312 is an apocalyptic number.

212887312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212887312 is an abundant number, since it is smaller than the sum of its proper divisors (237079424).

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

212887312 is a wasteful number, since it uses less digits than its factorization.

212887312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209606 (or 1209600 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 212887312 is about 14590.6583813069. The cubic root of 212887312 is about 597.1039252238.

The spelling of 212887312 in words is "two hundred twelve million, eight hundred eighty-seven thousand, three hundred twelve".