102131117 has 8 divisors (see below), whose sum is σ = 111502560. Its totient is φ = 92774160.

The previous prime is 102131111. The next prime is 102131119. The reversal of 102131117 is 711131201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102131117 - 2¹⁸ = 101868973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102131095 and 102131104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102131111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15578 + ... + 21140.

It is an arithmetic number, because the mean of its divisors is an integer number (13937820).

Almost surely, 2^102131117 is an apocalyptic number.

It is an amenable number.

102131117 is a deficient number, since it is larger than the sum of its proper divisors (9371443).

102131117 is a wasteful number, since it uses less digits than its factorization.

102131117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7243.

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

The square root of 102131117 is about 10105.9941124068. The cubic root of 102131117 is about 467.4329902907.

Adding to 102131117 its reverse (711131201), we get a palindrome (813262318).

The spelling of 102131117 in words is "one hundred two million, one hundred thirty-one thousand, one hundred seventeen".