102311117 has 4 divisors (see below), whose sum is σ = 108329436. Its totient is φ = 96292800.

The previous prime is 102311093. The next prime is 102311119. The reversal of 102311117 is 711113201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 711113201 = 3547 ⋅200483.

It can be written as a sum of positive squares in 2 ways, for example, as 33570436 + 68740681 = 5794^2 + 8291^2 .

It is a cyclic number.

It is not a de Polignac number, because 102311117 - 2⁸ = 102310861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 6018301 = 102311117 / (1 + 0 + 2 + 3 + 1 + 1 + 1 + 1 + 7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102311095 and 102311104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102311119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3009134 + ... + 3009167.

It is an arithmetic number, because the mean of its divisors is an integer number (27082359).

Almost surely, 2^102311117 is an apocalyptic number.

102311117 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

102311117 is a deficient number, since it is larger than the sum of its proper divisors (6018319).

102311117 is an equidigital number, since it uses as much as digits as its factorization.

102311117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6018318.

The product of its (nonzero) digits is 42, while the sum is 17.

The square root of 102311117 is about 10114.8957977826. The cubic root of 102311117 is about 467.7074367072.

Adding to 102311117 its reverse (711113201), we get a palindrome (813424318).

The spelling of 102311117 in words is "one hundred two million, three hundred eleven thousand, one hundred seventeen".