213308323 has 2 divisors, whose sum is σ = 213308324. Its totient is φ = 213308322.

The previous prime is 213308287. The next prime is 213308351. The reversal of 213308323 is 323803312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213308323 - 2⁹ = 213307811 is a prime.

It is a super-2 number, since 2×213308323² = 91000881322144658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213309323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106654161 + 106654162.

It is an arithmetic number, because the mean of its divisors is an integer number (106654162).

Almost surely, 2^213308323 is an apocalyptic number.

213308323 is a deficient number, since it is larger than the sum of its proper divisors (1).

213308323 is an equidigital number, since it uses as much as digits as its factorization.

213308323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 213308323 is about 14605.0786714759. The cubic root of 213308323 is about 597.4972816645.

The spelling of 213308323 in words is "two hundred thirteen million, three hundred eight thousand, three hundred twenty-three".