5131631 has 2 divisors, whose sum is σ = 5131632. Its totient is φ = 5131630.

The previous prime is 5131627. The next prime is 5131649. The reversal of 5131631 is 1361315.

It is a happy number.

5131631 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5131631 - 2² = 5131627 is a prime.

It is a super-2 number, since 2×5131631² = 52667273440322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5101631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2565815 + 2565816.

It is an arithmetic number, because the mean of its divisors is an integer number (2565816).

Almost surely, 2^5131631 is an apocalyptic number.

5131631 is a deficient number, since it is larger than the sum of its proper divisors (1).

5131631 is an equidigital number, since it uses as much as digits as its factorization.

5131631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270, while the sum is 20.

The square root of 5131631 is about 2265.3103540133. The cubic root of 5131631 is about 172.4851881142.

Adding to 5131631 its reverse (1361315), we get a palindrome (6492946).

The spelling of 5131631 in words is "five million, one hundred thirty-one thousand, six hundred thirty-one".