5128931 has 8 divisors (see below), whose sum is σ = 5387040. Its totient is φ = 4873792.

The previous prime is 5128909. The next prime is 5128943. The reversal of 5128931 is 1398215.

5128931 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5128931 - 2⁶ = 5128867 is a prime.

It is a super-2 number, since 2×5128931² = 52611866405522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5128894 and 5128903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5128901) 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, 3335 + ... + 4623.

It is an arithmetic number, because the mean of its divisors is an integer number (673380).

Almost surely, 2^5128931 is an apocalyptic number.

5128931 is a deficient number, since it is larger than the sum of its proper divisors (258109).

5128931 is a wasteful number, since it uses less digits than its factorization.

5128931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485.

The product of its digits is 2160, while the sum is 29.

The square root of 5128931 is about 2264.7143307711. The cubic root of 5128931 is about 172.4549318656.

It can be divided in two parts, 51 and 28931, that added together give a palindrome (28982).

The spelling of 5128931 in words is "five million, one hundred twenty-eight thousand, nine hundred thirty-one".