212863873 has 8 divisors (see below), whose sum is σ = 222507648. Its totient is φ = 203252544.

The previous prime is 212863867. The next prime is 212863877. The reversal of 212863873 is 378368212.

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 212863873 - 2⁹ = 212863361 is a prime.

It is a super-2 number, since 2×212863873² = 90622056857120258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212863877) 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, 5836 + ... + 21442.

It is an arithmetic number, because the mean of its divisors is an integer number (27813456).

Almost surely, 2^212863873 is an apocalyptic number.

212863873 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

212863873 is a deficient number, since it is larger than the sum of its proper divisors (9643775).

212863873 is a wasteful number, since it uses less digits than its factorization.

212863873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16223.

The product of its digits is 96768, while the sum is 40.

The square root of 212863873 is about 14589.8551397881. The cubic root of 212863873 is about 597.0820106055.

The spelling of 212863873 in words is "two hundred twelve million, eight hundred sixty-three thousand, eight hundred seventy-three".