212442323 has 2 divisors, whose sum is σ = 212442324. Its totient is φ = 212442322.

The previous prime is 212442311. The next prime is 212442343. The reversal of 212442323 is 323244212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212442323 - 2²⁰ = 211393747 is a prime.

It is a super-3 number, since 3×212442323³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (212442343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106221161 + 106221162.

It is an arithmetic number, because the mean of its divisors is an integer number (106221162).

Almost surely, 2^212442323 is an apocalyptic number.

212442323 is a deficient number, since it is larger than the sum of its proper divisors (1).

212442323 is an equidigital number, since it uses as much as digits as its factorization.

212442323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 23.

The square root of 212442323 is about 14575.4012980775. The cubic root of 212442323 is about 596.6876016430.

Adding to 212442323 its reverse (323244212), we get a palindrome (535686535).

The spelling of 212442323 in words is "two hundred twelve million, four hundred forty-two thousand, three hundred twenty-three".