308075631512081 has 2 divisors, whose sum is σ = 308075631512082. Its totient is φ = 308075631512080.

The previous prime is 308075631512009. The next prime is 308075631512147. The reversal of 308075631512081 is 180215136570803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305805836163025 + 2269795349056 = 17487305^2 + 1506584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-308075631512081 is a prime.

It is a super-2 number, since 2×308075631512081² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (308075661512081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154037815756040 + 154037815756041.

It is an arithmetic number, because the mean of its divisors is an integer number (154037815756041).

Almost surely, 2^{308075631512081} is an apocalyptic number.

It is an amenable number.

308075631512081 is a deficient number, since it is larger than the sum of its proper divisors (1).

308075631512081 is an equidigital number, since it uses as much as digits as its factorization.

308075631512081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 308075631512081 in words is "three hundred eight trillion, seventy-five billion, six hundred thirty-one million, five hundred twelve thousand, eighty-one".