211703923 has 2 divisors, whose sum is σ = 211703924. Its totient is φ = 211703922.

The previous prime is 211703903. The next prime is 211703953. The reversal of 211703923 is 329307112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211703923 - 2⁹ = 211703411 is a prime.

It is equal to p_11690461 and since 211703923 and 11690461 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 211703891 and 211703900.

It is not a weakly prime, because it can be changed into another prime (211703903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105851961 + 105851962.

It is an arithmetic number, because the mean of its divisors is an integer number (105851962).

Almost surely, 2^211703923 is an apocalyptic number.

211703923 is a deficient number, since it is larger than the sum of its proper divisors (1).

211703923 is an equidigital number, since it uses as much as digits as its factorization.

211703923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 211703923 is about 14550.0489002615. The cubic root of 211703923 is about 595.9954834650.

The spelling of 211703923 in words is "two hundred eleven million, seven hundred three thousand, nine hundred twenty-three".