212403283 has 2 divisors, whose sum is σ = 212403284. Its totient is φ = 212403282.

The previous prime is 212403179. The next prime is 212403307. The reversal of 212403283 is 382304212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212403283 is a prime.

It is not a weakly prime, because it can be changed into another prime (212400283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106201641 + 106201642.

It is an arithmetic number, because the mean of its divisors is an integer number (106201642).

Almost surely, 2^212403283 is an apocalyptic number.

212403283 is a deficient number, since it is larger than the sum of its proper divisors (1).

212403283 is an equidigital number, since it uses as much as digits as its factorization.

212403283 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 212403283 is about 14574.0619938300. The cubic root of 212403283 is about 596.6510488025.

Adding to 212403283 its reverse (382304212), we get a palindrome (594707495).

The spelling of 212403283 in words is "two hundred twelve million, four hundred three thousand, two hundred eighty-three".