212765983 has 2 divisors, whose sum is σ = 212765984. Its totient is φ = 212765982.

The previous prime is 212765963. The next prime is 212766013. The reversal of 212765983 is 389567212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212765983 - 2⁵ = 212765951 is a prime.

It is the 14587-th Hogben number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212765963) by changing a digit.

It is a nontrivial repunit in base 14586.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106382991 + 106382992.

It is an arithmetic number, because the mean of its divisors is an integer number (106382992).

Almost surely, 2^212765983 is an apocalyptic number.

212765983 is a deficient number, since it is larger than the sum of its proper divisors (1).

212765983 is an equidigital number, since it uses as much as digits as its factorization.

212765983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The square root of 212765983 is about 14586.5000257087. The cubic root of 212765983 is about 596.9904695984.

The spelling of 212765983 in words is "two hundred twelve million, seven hundred sixty-five thousand, nine hundred eighty-three".