3111923 has 4 divisors (see below), whose sum is σ = 3247248. Its totient is φ = 2976600.

The previous prime is 3111863. The next prime is 3111931. The reversal of 3111923 is 3291113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3111923 - 2¹² = 3107827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3111895 and 3111904.

It is not an unprimeable number, because it can be changed into a prime (3111973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67628 + ... + 67673.

It is an arithmetic number, because the mean of its divisors is an integer number (811812).

Almost surely, 2^3111923 is an apocalyptic number.

3111923 is a deficient number, since it is larger than the sum of its proper divisors (135325).

3111923 is a wasteful number, since it uses less digits than its factorization.

3111923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135324.

The product of its digits is 162, while the sum is 20.

The square root of 3111923 is about 1764.0643412302. The cubic root of 3111923 is about 145.9966690927.

The spelling of 3111923 in words is "three million, one hundred eleven thousand, nine hundred twenty-three".