312080617 has 2 divisors, whose sum is σ = 312080618. Its totient is φ = 312080616.

The previous prime is 312080603. The next prime is 312080651. The reversal of 312080617 is 716080213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308915776 + 3164841 = 17576^2 + 1779^2 .

It is an emirp because it is prime and its reverse (716080213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312080617 - 2²³ = 303692009 is a prime.

It is not a weakly prime, because it can be changed into another prime (312080117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156040308 + 156040309.

It is an arithmetic number, because the mean of its divisors is an integer number (156040309).

Almost surely, 2^312080617 is an apocalyptic number.

It is an amenable number.

312080617 is a deficient number, since it is larger than the sum of its proper divisors (1).

312080617 is an equidigital number, since it uses as much as digits as its factorization.

312080617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 312080617 is about 17665.8036047048. The cubic root of 312080617 is about 678.3007000878.

The spelling of 312080617 in words is "three hundred twelve million, eighty thousand, six hundred seventeen".