102918317 has 2 divisors, whose sum is σ = 102918318. Its totient is φ = 102918316.

The previous prime is 102918311. The next prime is 102918329. The reversal of 102918317 is 713819201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51566761 + 51351556 = 7181^2 + 7166^2 .

It is an emirp because it is prime and its reverse (713819201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102918317 - 2¹⁸ = 102656173 is a prime.

It is a super-2 number, since 2×102918317² = 21184359948224978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102918311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51459158 + 51459159.

It is an arithmetic number, because the mean of its divisors is an integer number (51459159).

Almost surely, 2^102918317 is an apocalyptic number.

It is an amenable number.

102918317 is a deficient number, since it is larger than the sum of its proper divisors (1).

102918317 is an equidigital number, since it uses as much as digits as its factorization.

102918317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 102918317 is about 10144.8665343611. The cubic root of 102918317 is about 468.6308684041.

The spelling of 102918317 in words is "one hundred two million, nine hundred eighteen thousand, three hundred seventeen".