2031004421 has 4 divisors (see below), whose sum is σ = 2041638144. Its totient is φ = 2020370700.

The previous prime is 2031004403. The next prime is 2031004441. The reversal of 2031004421 is 1244001302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1244001302 = 2 ⋅622000651.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2031004421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2031004421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031004441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5316575 + ... + 5316956.

It is an arithmetic number, because the mean of its divisors is an integer number (510409536).

Almost surely, 2^2031004421 is an apocalyptic number.

It is an amenable number.

2031004421 is a deficient number, since it is larger than the sum of its proper divisors (10633723).

2031004421 is a wasteful number, since it uses less digits than its factorization.

2031004421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10633722.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2031004421 is about 45066.6664065582. Note that the first 3 decimals coincide. The cubic root of 2031004421 is about 1266.3982146314.

Adding to 2031004421 its reverse (1244001302), we get a palindrome (3275005723).

The spelling of 2031004421 in words is "two billion, thirty-one million, four thousand, four hundred twenty-one".