307944230081 has 4 divisors (see below), whose sum is σ = 311404277700. Its totient is φ = 304484182464.

The previous prime is 307944230063. The next prime is 307944230093. The reversal of 307944230081 is 180032449703.

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 129467553856 + 178476676225 = 359816^2 + 422465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-307944230081 is a prime.

It is a super-2 number, since 2×307944230081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (307944230021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1730023676 + ... + 1730023853.

It is an arithmetic number, because the mean of its divisors is an integer number (77851069425).

Almost surely, 2^307944230081 is an apocalyptic number.

It is an amenable number.

307944230081 is a deficient number, since it is larger than the sum of its proper divisors (3460047619).

307944230081 is an equidigital number, since it uses as much as digits as its factorization.

307944230081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460047618.

The product of its (nonzero) digits is 145152, while the sum is 41.

Adding to 307944230081 its reverse (180032449703), we get a palindrome (487976679784).

The spelling of 307944230081 in words is "three hundred seven billion, nine hundred forty-four million, two hundred thirty thousand, eighty-one".