212856341 has 4 divisors (see below), whose sum is σ = 213180000. Its totient is φ = 212532684.

The previous prime is 212856313. The next prime is 212856349. The reversal of 212856341 is 143658212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212856341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212856298 and 212856307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212856349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160841 + ... + 162158.

It is an arithmetic number, because the mean of its divisors is an integer number (53295000).

Almost surely, 2^212856341 is an apocalyptic number.

It is an amenable number.

212856341 is a deficient number, since it is larger than the sum of its proper divisors (323659).

212856341 is an equidigital number, since it uses as much as digits as its factorization.

212856341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323658.

The product of its digits is 11520, while the sum is 32.

The square root of 212856341 is about 14589.5970129404. The cubic root of 212856341 is about 597.0749681160.

The spelling of 212856341 in words is "two hundred twelve million, eight hundred fifty-six thousand, three hundred forty-one".