212316881 has 8 divisors (see below), whose sum is σ = 243868800. Its totient is φ = 181070208.

The previous prime is 212316877. The next prime is 212316919. The reversal of 212316881 is 188613212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212316881 - 2² = 212316877 is a prime.

It is a super-2 number, since 2×212316881² = 90156915915136322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212316581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74816 + ... + 77601.

It is an arithmetic number, because the mean of its divisors is an integer number (30483600).

Almost surely, 2^212316881 is an apocalyptic number.

It is an amenable number.

212316881 is a deficient number, since it is larger than the sum of its proper divisors (31551919).

212316881 is a wasteful number, since it uses less digits than its factorization.

212316881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152623.

The product of its digits is 4608, while the sum is 32.

The square root of 212316881 is about 14571.0974535208. The cubic root of 212316881 is about 596.5701353707.

The spelling of 212316881 in words is "two hundred twelve million, three hundred sixteen thousand, eight hundred eighty-one".