102102312 has 32 divisors (see below), whose sum is σ = 274891680. Its totient is φ = 31416000.

The previous prime is 102102307. The next prime is 102102337. The reversal of 102102312 is 213201201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163314 + ... + 163937.

It is an arithmetic number, because the mean of its divisors is an integer number (8590365).

Almost surely, 2^102102312 is an apocalyptic number.

102102312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102102312 is an abundant number, since it is smaller than the sum of its proper divisors (172789368).

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

102102312 is a wasteful number, since it uses less digits than its factorization.

102102312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327273 (or 327269 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 102102312 is about 10104.5688675965. The cubic root of 102102312 is about 467.3890413170.

Adding to 102102312 its reverse (213201201), we get a palindrome (315303513).

The spelling of 102102312 in words is "one hundred two million, one hundred two thousand, three hundred twelve".