2103430321 has 16 divisors (see below), whose sum is σ = 2292559360. Its totient is φ = 1922538240.

The previous prime is 2103430271. The next prime is 2103430333. The reversal of 2103430321 is 1230343012.

It is a cyclic number.

It is not a de Polignac number, because 2103430321 - 2⁷ = 2103430193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2103430391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193195 + ... + 203791.

It is an arithmetic number, because the mean of its divisors is an integer number (143284960).

Almost surely, 2^2103430321 is an apocalyptic number.

It is an amenable number.

2103430321 is a deficient number, since it is larger than the sum of its proper divisors (189129039).

2103430321 is a wasteful number, since it uses less digits than its factorization.

2103430321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10984.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2103430321 is about 45863.1695481243. The cubic root of 2103430321 is about 1281.2760551323.

Adding to 2103430321 its reverse (1230343012), we get a palindrome (3333773333).

The spelling of 2103430321 in words is "two billion, one hundred three million, four hundred thirty thousand, three hundred twenty-one".