212881364 has 6 divisors (see below), whose sum is σ = 372542394. Its totient is φ = 106440680.

The previous prime is 212881351. The next prime is 212881367. The reversal of 212881364 is 463188212.

212881364 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 190716100 + 22165264 = 13810^2 + 4708^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212881367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26610167 + ... + 26610174.

It is an arithmetic number, because the mean of its divisors is an integer number (62090399).

Almost surely, 2^212881364 is an apocalyptic number.

It is an amenable number.

212881364 is a deficient number, since it is larger than the sum of its proper divisors (159661030).

212881364 is a wasteful number, since it uses less digits than its factorization.

212881364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53220345 (or 53220343 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 212881364 is about 14590.4545508356. The cubic root of 212881364 is about 597.0983642110.

The spelling of 212881364 in words is "two hundred twelve million, eight hundred eighty-one thousand, three hundred sixty-four".