211321323 has 12 divisors (see below), whose sum is σ = 306168408. Its totient is φ = 140453280.

The previous prime is 211321321. The next prime is 211321343. The reversal of 211321323 is 323123112.

211321323 is a `hidden beast` number, since 21 + 1 + 321 + 323 = 666.

It is not a de Polignac number, because 211321323 - 2¹ = 211321321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211321296 and 211321305.

It is not an unprimeable number, because it can be changed into a prime (211321321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32490 + ... + 38447.

It is an arithmetic number, because the mean of its divisors is an integer number (25514034).

Almost surely, 2^211321323 is an apocalyptic number.

211321323 is a deficient number, since it is larger than the sum of its proper divisors (94847085).

211321323 is a wasteful number, since it uses less digits than its factorization.

211321323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71274 (or 71271 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 211321323 is about 14536.8952324766. The cubic root of 211321323 is about 595.6362311439.

Adding to 211321323 its reverse (323123112), we get a palindrome (534444435).

It can be divided in two parts, 2113 and 21323, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 211321323 in words is "two hundred eleven million, three hundred twenty-one thousand, three hundred twenty-three".