212282823 has 16 divisors (see below), whose sum is σ = 293712896. Its totient is φ = 136235520.

The previous prime is 212282809. The next prime is 212282857. The reversal of 212282823 is 328282212.

It is not a de Polignac number, because 212282823 - 2¹⁶ = 212217287 is a prime.

It is a super-3 number, since 3×212282823³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212282023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12036 + ... + 23862.

It is an arithmetic number, because the mean of its divisors is an integer number (18357056).

Almost surely, 2^212282823 is an apocalyptic number.

212282823 is a deficient number, since it is larger than the sum of its proper divisors (81430073).

212282823 is a wasteful number, since it uses less digits than its factorization.

212282823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12054.

The product of its digits is 6144, while the sum is 30.

The square root of 212282823 is about 14569.9287232299. The cubic root of 212282823 is about 596.5382348264.

The spelling of 212282823 in words is "two hundred twelve million, two hundred eighty-two thousand, eight hundred twenty-three".