212331233 has 2 divisors, whose sum is σ = 212331234. Its totient is φ = 212331232.

The previous prime is 212331211. The next prime is 212331247. The reversal of 212331233 is 332133212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134397649 + 77933584 = 11593^2 + 8828^2 .

It is a cyclic number.

It is not a de Polignac number, because 212331233 - 2⁸ = 212330977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212331263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106165616 + 106165617.

It is an arithmetic number, because the mean of its divisors is an integer number (106165617).

Almost surely, 2^212331233 is an apocalyptic number.

It is an amenable number.

212331233 is a deficient number, since it is larger than the sum of its proper divisors (1).

212331233 is an equidigital number, since it uses as much as digits as its factorization.

212331233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 20.

The square root of 212331233 is about 14571.5899269778. The cubic root of 212331233 is about 596.5835771998.

Adding to 212331233 its reverse (332133212), we get a palindrome (544464445).

The spelling of 212331233 in words is "two hundred twelve million, three hundred thirty-one thousand, two hundred thirty-three".