102031218 has 32 divisors (see below), whose sum is σ = 230128320. Its totient is φ = 33501600.

The previous prime is 102031213. The next prime is 102031231. The reversal of 102031218 is 812130201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 102031218.

It is not an unprimeable number, because it can be changed into a prime (102031211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10483 + ... + 17718.

It is an arithmetic number, because the mean of its divisors is an integer number (7191510).

Almost surely, 2^102031218 is an apocalyptic number.

102031218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

102031218 is an abundant number, since it is smaller than the sum of its proper divisors (128097102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102031218 is a wasteful number, since it uses less digits than its factorization.

102031218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28279 (or 28273 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 102031218 is about 10101.0503414249. The cubic root of 102031218 is about 467.2805348879.

Adding to 102031218 its reverse (812130201), we get a palindrome (914161419).

The spelling of 102031218 in words is "one hundred two million, thirty-one thousand, two hundred eighteen".