5231311 has 2 divisors, whose sum is σ = 5231312. Its totient is φ = 5231310.

The previous prime is 5231309. The next prime is 5231329. The reversal of 5231311 is 1131325.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5231311 - 2¹ = 5231309 is a prime.

It is a super-2 number, since 2×5231311² = 54733229557442, which contains 22 as substring.

Together with 5231309, 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 (5231341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2615655 + 2615656.

It is an arithmetic number, because the mean of its divisors is an integer number (2615656).

Almost surely, 2^5231311 is an apocalyptic number.

5231311 is a deficient number, since it is larger than the sum of its proper divisors (1).

5231311 is an equidigital number, since it uses as much as digits as its factorization.

5231311 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 5231311 is about 2287.2059373830. The cubic root of 5231311 is about 173.5948538296.

Adding to 5231311 its reverse (1131325), we get a palindrome (6362636).

The spelling of 5231311 in words is "five million, two hundred thirty-one thousand, three hundred eleven".