212323103 has 2 divisors, whose sum is σ = 212323104. Its totient is φ = 212323102.

The previous prime is 212323093. The next prime is 212323129. The reversal of 212323103 is 301323212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212323103 - 2⁴ = 212323087 is a prime.

It is a super-2 number, since 2×212323103² = 90162200135097218, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212323193) 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 as a sum of consecutive naturals, namely, 106161551 + 106161552.

It is an arithmetic number, because the mean of its divisors is an integer number (106161552).

Almost surely, 2^212323103 is an apocalyptic number.

212323103 is a deficient number, since it is larger than the sum of its proper divisors (1).

212323103 is an equidigital number, since it uses as much as digits as its factorization.

212323103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 212323103 is about 14571.3109568082. The cubic root of 212323103 is about 596.5759628601.

Adding to 212323103 its reverse (301323212), we get a palindrome (513646315).

The spelling of 212323103 in words is "two hundred twelve million, three hundred twenty-three thousand, one hundred three".