211403023 has 8 divisors (see below), whose sum is σ = 231063728. Its totient is φ = 192227904.

The previous prime is 211403009. The next prime is 211403029. The reversal of 211403023 is 320304112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211403023 - 2⁹ = 211402511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211402988 and 211403006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211403029) 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 7 ways as a sum of consecutive naturals, for example, 120486 + ... + 122227.

It is an arithmetic number, because the mean of its divisors is an integer number (28882966).

Almost surely, 2^211403023 is an apocalyptic number.

211403023 is a deficient number, since it is larger than the sum of its proper divisors (19660705).

211403023 is a wasteful number, since it uses less digits than its factorization.

211403023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242793.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 211403023 is about 14539.7050520291. The cubic root of 211403023 is about 595.7129818939.

Adding to 211403023 its reverse (320304112), we get a palindrome (531707135).

The spelling of 211403023 in words is "two hundred eleven million, four hundred three thousand, twenty-three".