312102317 has 2 divisors, whose sum is σ = 312102318. Its totient is φ = 312102316.

The previous prime is 312102313. The next prime is 312102383. The reversal of 312102317 is 713201213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173475241 + 138627076 = 13171^2 + 11774^2 .

It is an emirp because it is prime and its reverse (713201213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312102317 - 2² = 312102313 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312102311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156051158 + 156051159.

It is an arithmetic number, because the mean of its divisors is an integer number (156051159).

Almost surely, 2^312102317 is an apocalyptic number.

It is an amenable number.

312102317 is a deficient number, since it is larger than the sum of its proper divisors (1).

312102317 is an equidigital number, since it uses as much as digits as its factorization.

312102317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 312102317 is about 17666.4177749763. The cubic root of 312102317 is about 678.3164212222.

The spelling of 312102317 in words is "three hundred twelve million, one hundred two thousand, three hundred seventeen".