213011323 has 16 divisors (see below), whose sum is σ = 253808640. Its totient is φ = 174924000.

The previous prime is 213011317. The next prime is 213011341. The reversal of 213011323 is 323110312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213011323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213011297 and 213011306.

It is not an unprimeable number, because it can be changed into a prime (213011353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17058 + ... + 26776.

It is an arithmetic number, because the mean of its divisors is an integer number (15863040).

Almost surely, 2^213011323 is an apocalyptic number.

213011323 is a deficient number, since it is larger than the sum of its proper divisors (40797317).

213011323 is a wasteful number, since it uses less digits than its factorization.

213011323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9858.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 213011323 is about 14594.9074337592. The cubic root of 213011323 is about 597.2198442685.

Adding to 213011323 its reverse (323110312), we get a palindrome (536121635).

The spelling of 213011323 in words is "two hundred thirteen million, eleven thousand, three hundred twenty-three".