5231131 has 2 divisors, whose sum is σ = 5231132. Its totient is φ = 5231130.

The previous prime is 5231129. The next prime is 5231141. The reversal of 5231131 is 1311325.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5231131 - 2¹ = 5231129 is a prime.

It is a super-2 number, since 2×5231131² = 54729463078322, which contains 22 as substring.

Together with 5231129, it forms a pair of twin primes.

5231131 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (5231101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2615565 + 2615566.

It is an arithmetic number, because the mean of its divisors is an integer number (2615566).

Almost surely, 2^5231131 is an apocalyptic number.

5231131 is a deficient number, since it is larger than the sum of its proper divisors (1).

5231131 is an equidigital number, since it uses as much as digits as its factorization.

5231131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90, while the sum is 16.

The square root of 5231131 is about 2287.1665877238. The cubic root of 5231131 is about 173.5928627779.

Adding to 5231131 its reverse (1311325), we get a palindrome (6542456).

The spelling of 5231131 in words is "five million, two hundred thirty-one thousand, one hundred thirty-one".