5128231 has 2 divisors, whose sum is σ = 5128232. Its totient is φ = 5128230.

The previous prime is 5128229. The next prime is 5128261. The reversal of 5128231 is 1328215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5128231 - 2¹ = 5128229 is a prime.

It is a super-2 number, since 2×5128231² = 52597506378722, which contains 22 as substring.

Together with 5128229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5128261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2564115 + 2564116.

It is an arithmetic number, because the mean of its divisors is an integer number (2564116).

Almost surely, 2^5128231 is an apocalyptic number.

5128231 is a deficient number, since it is larger than the sum of its proper divisors (1).

5128231 is an equidigital number, since it uses as much as digits as its factorization.

5128231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 5128231 is about 2264.5597806196. The cubic root of 5128231 is about 172.4470859198.

It can be divided in two parts, 51 and 28231, that added together give a palindrome (28282).

The spelling of 5128231 in words is "five million, one hundred twenty-eight thousand, two hundred thirty-one".