213344123 has 2 divisors, whose sum is σ = 213344124. Its totient is φ = 213344122.

The previous prime is 213344081. The next prime is 213344129. The reversal of 213344123 is 321443312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213344123 - 2¹⁰ = 213343099 is a prime.

It is not a weakly prime, because it can be changed into another prime (213344129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106672061 + 106672062.

It is an arithmetic number, because the mean of its divisors is an integer number (106672062).

Almost surely, 2^213344123 is an apocalyptic number.

213344123 is a deficient number, since it is larger than the sum of its proper divisors (1).

213344123 is an equidigital number, since it uses as much as digits as its factorization.

213344123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 23.

The square root of 213344123 is about 14606.3042211232. The cubic root of 213344123 is about 597.5307062177.

Adding to 213344123 its reverse (321443312), we get a palindrome (534787435).

The spelling of 213344123 in words is "two hundred thirteen million, three hundred forty-four thousand, one hundred twenty-three".