30031310081 has 2 divisors, whose sum is σ = 30031310082. Its totient is φ = 30031310080.

The previous prime is 30031310077. The next prime is 30031310087. The reversal of 30031310081 is 18001313003.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29612903056 + 418407025 = 172084^2 + 20455^2 .

It is a cyclic number.

It is not a de Polignac number, because 30031310081 - 2² = 30031310077 is a prime.

It is a super-2 number, since 2×30031310081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30031310087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15015655040 + 15015655041.

It is an arithmetic number, because the mean of its divisors is an integer number (15015655041).

Almost surely, 2^30031310081 is an apocalyptic number.

It is an amenable number.

30031310081 is a deficient number, since it is larger than the sum of its proper divisors (1).

30031310081 is an equidigital number, since it uses as much as digits as its factorization.

30031310081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 30031310081 its reverse (18001313003), we get a palindrome (48032623084).

The spelling of 30031310081 in words is "thirty billion, thirty-one million, three hundred ten thousand, eighty-one".