2119931 has 6 divisors (see below), whose sum is σ = 2317932. Its totient is φ = 1922820.

The previous prime is 2119921. The next prime is 2119937. The reversal of 2119931 is 1399112.

2119931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2119931 is a prime.

It is a super-2 number, since 2×2119931² = 8988214889522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2119931.

It is not an unprimeable number, because it can be changed into a prime (2119937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4610 + ... + 5048.

It is an arithmetic number, because the mean of its divisors is an integer number (386322).

2^2119931 is an apocalyptic number.

2119931 is a deficient number, since it is larger than the sum of its proper divisors (198001).

2119931 is an frugal number, since it uses more digits than its factorization.

2119931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889 (or 450 counting only the distinct ones).

The product of its digits is 486, while the sum is 26.

The square root of 2119931 is about 1455.9982829660. The cubic root of 2119931 is about 128.4617720520.

The spelling of 2119931 in words is "two million, one hundred nineteen thousand, nine hundred thirty-one".