102112312 has 8 divisors (see below), whose sum is σ = 191460600. Its totient is φ = 51056152.

The previous prime is 102112301. The next prime is 102112321. The reversal of 102112312 is 213211201.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 102112292 and 102112301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6382012 + ... + 6382027.

It is an arithmetic number, because the mean of its divisors is an integer number (23932575).

Almost surely, 2^102112312 is an apocalyptic number.

It is an amenable number.

102112312 is a deficient number, since it is larger than the sum of its proper divisors (89348288).

102112312 is a wasteful number, since it uses less digits than its factorization.

102112312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12764045 (or 12764041 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 102112312 is about 10105.0636811452. The cubic root of 102112312 is about 467.4042996650.

Adding to 102112312 its reverse (213211201), we get a palindrome (315323513).

The spelling of 102112312 in words is "one hundred two million, one hundred twelve thousand, three hundred twelve".