3081243073 has 4 divisors (see below), whose sum is σ = 3082324420. Its totient is φ = 3080161728.

The previous prime is 3081243037. The next prime is 3081243097. The reversal of 3081243073 is 3703421803.

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 1778899329 + 1302343744 = 42177^2 + 36088^2 .

It is a cyclic number.

It is not a de Polignac number, because 3081243073 - 2²⁵ = 3047688641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3081243023) 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, 536388 + ... + 542101.

It is an arithmetic number, because the mean of its divisors is an integer number (770581105).

Almost surely, 2^3081243073 is an apocalyptic number.

It is an amenable number.

3081243073 is a deficient number, since it is larger than the sum of its proper divisors (1081347).

3081243073 is a wasteful number, since it uses less digits than its factorization.

3081243073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081346.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 3081243073 is about 55508.9458826233. The cubic root of 3081243073 is about 1455.1529813207.

Adding to 3081243073 its reverse (3703421803), we get a palindrome (6784664876).

The spelling of 3081243073 in words is "three billion, eighty-one million, two hundred forty-three thousand, seventy-three".