2011923 has 6 divisors (see below), whose sum is σ = 2906124. Its totient is φ = 1341276.

The previous prime is 2011913. The next prime is 2011939. The reversal of 2011923 is 3291102.

It is a happy number.

It is not a de Polignac number, because 2011923 - 2⁴ = 2011907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2011896 and 2011905.

It is not an unprimeable number, because it can be changed into a prime (2011903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111765 + ... + 111782.

It is an arithmetic number, because the mean of its divisors is an integer number (484354).

2^2011923 is an apocalyptic number.

2011923 is a deficient number, since it is larger than the sum of its proper divisors (894201).

2011923 is a wasteful number, since it uses less digits than its factorization.

2011923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223553 (or 223550 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 2011923 is about 1418.4227155541. The cubic root of 2011923 is about 126.2419764205.

The spelling of 2011923 in words is "two million, eleven thousand, nine hundred twenty-three".