102312388 has 12 divisors (see below), whose sum is σ = 179975740. Its totient is φ = 50890752.

The previous prime is 102312367. The next prime is 102312389. The reversal of 102312388 is 883213201.

It can be written as a sum of positive squares in 2 ways, for example, as 31449664 + 70862724 = 5608^2 + 8418^2 .

It is not an unprimeable number, because it can be changed into a prime (102312389) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 65493 + ... + 67036.

Almost surely, 2^102312388 is an apocalyptic number.

It is an amenable number.

102312388 is a deficient number, since it is larger than the sum of its proper divisors (77663352).

102312388 is a wasteful number, since it uses less digits than its factorization.

102312388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132726 (or 132724 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 102312388 is about 10114.9586257186. The cubic root of 102312388 is about 467.7093734589.

Adding to 102312388 its reverse (883213201), we get a palindrome (985525589).

The spelling of 102312388 in words is "one hundred two million, three hundred twelve thousand, three hundred eighty-eight".