5231128 has 32 divisors (see below), whose sum is σ = 11325600. Its totient is φ = 2218752.

The previous prime is 5231119. The next prime is 5231129. The reversal of 5231128 is 8211325.

It is a junction number, because it is equal to n+sod(n) for n = 5231099 and 5231108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5231129) 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, 5676 + ... + 6532.

It is an arithmetic number, because the mean of its divisors is an integer number (353925).

Almost surely, 2^5231128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5231128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5662800).

5231128 is an abundant number, since it is smaller than the sum of its proper divisors (6094472).

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

5231128 is a wasteful number, since it uses less digits than its factorization.

5231128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979 (or 975 counting only the distinct ones).

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

The square root of 5231128 is about 2287.1659318904. The cubic root of 5231128 is about 173.5928295933.

The spelling of 5231128 in words is "five million, two hundred thirty-one thousand, one hundred twenty-eight".