2043103021 has 4 divisors (see below), whose sum is σ = 2092934844. Its totient is φ = 1993271200.

The previous prime is 2043102961. The next prime is 2043103033. The reversal of 2043103021 is 1203013402.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1061847396 + 981255625 = 32586^2 + 31325^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043103021 - 2²⁵ = 2009548589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2043102986 and 2043103004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043103091) 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, 24915850 + ... + 24915931.

It is an arithmetic number, because the mean of its divisors is an integer number (523233711).

Almost surely, 2^2043103021 is an apocalyptic number.

It is an amenable number.

2043103021 is a deficient number, since it is larger than the sum of its proper divisors (49831823).

2043103021 is an equidigital number, since it uses as much as digits as its factorization.

2043103021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49831822.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2043103021 is about 45200.6971295798. The cubic root of 2043103021 is about 1268.9078632436.

Adding to 2043103021 its reverse (1203013402), we get a palindrome (3246116423).

The spelling of 2043103021 in words is "two billion, forty-three million, one hundred three thousand, twenty-one".