5231631 has 16 divisors (see below), whose sum is σ = 7776000. Its totient is φ = 3109248.

The previous prime is 5231623. The next prime is 5231647. The reversal of 5231631 is 1361325.

It is not a de Polignac number, because 5231631 - 2³ = 5231623 is a prime.

It is a super-2 number, since 2×5231631² = 54739925840322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5231598 and 5231607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5231671) 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 in 15 ways as a sum of consecutive naturals, for example, 1731 + ... + 3668.

It is an arithmetic number, because the mean of its divisors is an integer number (486000).

Almost surely, 2^5231631 is an apocalyptic number.

5231631 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

5231631 is a deficient number, since it is larger than the sum of its proper divisors (2544369).

5231631 is a wasteful number, since it uses less digits than its factorization.

5231631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5438.

The product of its digits is 540, while the sum is 21.

The square root of 5231631 is about 2287.2758906612. The cubic root of 5231631 is about 173.5983933643.

Adding to 5231631 its reverse (1361325), we get a palindrome (6592956).

The spelling of 5231631 in words is "five million, two hundred thirty-one thousand, six hundred thirty-one".