2315128 has 32 divisors (see below), whose sum is σ = 4762800. Its totient is φ = 1050112.

The previous prime is 2315123. The next prime is 2315129. The reversal of 2315128 is 8215132.

2315128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2315099 and 2315108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2315123) 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 7 ways as a sum of consecutive naturals, for example, 3651 + ... + 4237.

2^2315128 is an apocalyptic number.

It is an amenable number.

2315128 is an abundant number, since it is smaller than the sum of its proper divisors (2447672).

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

2315128 is a wasteful number, since it uses less digits than its factorization.

2315128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 635 counting only the distinct ones).

The product of its digits is 480, while the sum is 22.

The square root of 2315128 is about 1521.5544682988. The cubic root of 2315128 is about 132.2893865342.

It can be divided in two parts, 23 and 15128, that added together give a palindrome (15151).

The spelling of 2315128 in words is "two million, three hundred fifteen thousand, one hundred twenty-eight".