2305478321 has 4 divisors (see below), whose sum is σ = 2305635444. Its totient is φ = 2305321200.

The previous prime is 2305478299. The next prime is 2305478327. The reversal of 2305478321 is 1238745032.

2305478321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 339886096 + 1965592225 = 18436^2 + 44335^2 .

It is a cyclic number.

It is not a de Polignac number, because 2305478321 - 2¹⁴ = 2305461937 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2305478327) 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, 53990 + ... + 86751.

It is an arithmetic number, because the mean of its divisors is an integer number (576408861).

Almost surely, 2^2305478321 is an apocalyptic number.

It is an amenable number.

2305478321 is a deficient number, since it is larger than the sum of its proper divisors (157123).

2305478321 is a wasteful number, since it uses less digits than its factorization.

2305478321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157122.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 2305478321 is about 48015.3967077228. The cubic root of 2305478321 is about 1321.0533222872.

The spelling of 2305478321 in words is "two billion, three hundred five million, four hundred seventy-eight thousand, three hundred twenty-one".