5531131 has 2 divisors, whose sum is σ = 5531132. Its totient is φ = 5531130.

The previous prime is 5531129. The next prime is 5531143. The reversal of 5531131 is 1311355.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5531131 - 2¹ = 5531129 is a prime.

It is a super-2 number, since 2×5531131² = 61186820278322, which contains 22 as substring.

Together with 5531129, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 5531099 and 5531108.

It is not a weakly prime, because it can be changed into another prime (5531161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2765565 + 2765566.

It is an arithmetic number, because the mean of its divisors is an integer number (2765566).

Almost surely, 2^5531131 is an apocalyptic number.

5531131 is a deficient number, since it is larger than the sum of its proper divisors (1).

5531131 is an equidigital number, since it uses as much as digits as its factorization.

5531131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225, while the sum is 19.

The square root of 5531131 is about 2351.8356660277. The cubic root of 5531131 is about 176.8498306030.

Adding to 5531131 its reverse (1311355), we get a palindrome (6842486).

The spelling of 5531131 in words is "five million, five hundred thirty-one thousand, one hundred thirty-one".