2321869 has 12 divisors (see below), whose sum is σ = 2638720. Its totient is φ = 2039400.

The previous prime is 2321863. The next prime is 2321881. The reversal of 2321869 is 9681232.

It is not a de Polignac number, because 2321869 - 2⁹ = 2321357 is a prime.

It is a super-2 number, since 2×2321869² = 10782151306322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

2321869 is a lucky number.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 2321869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3442 + ... + 4060.

2^2321869 is an apocalyptic number.

It is an amenable number.

2321869 is a deficient number, since it is larger than the sum of its proper divisors (316851).

2321869 is a wasteful number, since it uses less digits than its factorization.

2321869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672 (or 661 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 2321869 is about 1523.7680269647. The cubic root of 2321869 is about 132.4176585825.

The spelling of 2321869 in words is "two million, three hundred twenty-one thousand, eight hundred sixty-nine".