102321312 has 24 divisors (see below), whose sum is σ = 268593696. Its totient is φ = 34107072.

The previous prime is 102321311. The next prime is 102321343. The reversal of 102321312 is 213123201.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 102321291 and 102321300.

It is not an unprimeable number, because it can be changed into a prime (102321311) 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, 532828 + ... + 533019.

It is an arithmetic number, because the mean of its divisors is an integer number (11191404).

Almost surely, 2^102321312 is an apocalyptic number.

102321312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102321312 is an abundant number, since it is smaller than the sum of its proper divisors (166272384).

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

102321312 is a wasteful number, since it uses less digits than its factorization.

102321312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065860 (or 1065852 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 102321312 is about 10115.3997449434. The cubic root of 102321312 is about 467.7229714118.

Adding to 102321312 its reverse (213123201), we get a palindrome (315444513).

The spelling of 102321312 in words is "one hundred two million, three hundred twenty-one thousand, three hundred twelve".