212331323 has 2 divisors, whose sum is σ = 212331324. Its totient is φ = 212331322.

The previous prime is 212331313. The next prime is 212331349. The reversal of 212331323 is 323133212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212331323 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 212331295 and 212331304.

It is not a weakly prime, because it can be changed into another prime (212331313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106165661 + 106165662.

It is an arithmetic number, because the mean of its divisors is an integer number (106165662).

Almost surely, 2^212331323 is an apocalyptic number.

212331323 is a deficient number, since it is larger than the sum of its proper divisors (1).

212331323 is an equidigital number, since it uses as much as digits as its factorization.

212331323 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 212331323 is about 14571.5930151785. The cubic root of 212331323 is about 596.5836614903.

Adding to 212331323 its reverse (323133212), we get a palindrome (535464535).

The spelling of 212331323 in words is "two hundred twelve million, three hundred thirty-one thousand, three hundred twenty-three".