2319021 has 24 divisors (see below), whose sum is σ = 3706560. Its totient is φ = 1389696.

The previous prime is 2319019. The next prime is 2319029. The reversal of 2319021 is 1209132.

It is a happy number.

2319021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2319021 - 2¹ = 2319019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2318985 and 2319003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2319029) 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 23 ways as a sum of consecutive naturals, for example, 3190 + ... + 3848.

It is an arithmetic number, because the mean of its divisors is an integer number (154440).

2^2319021 is an apocalyptic number.

It is an amenable number.

2319021 is a deficient number, since it is larger than the sum of its proper divisors (1387539).

2319021 is a wasteful number, since it uses less digits than its factorization.

2319021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 702 counting only the distinct ones).

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

The square root of 2319021 is about 1522.8332147678. The cubic root of 2319021 is about 132.3634953501.

It can be divided in two parts, 23 and 19021, that added together give a square (19044 = 138²).

The spelling of 2319021 in words is "two million, three hundred nineteen thousand, twenty-one".