5631131 has 8 divisors (see below), whose sum is σ = 6504624. Its totient is φ = 4817920.

The previous prime is 5631121. The next prime is 5631169. The reversal of 5631131 is 1311365.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5631131 is a prime.

It is a super-2 number, since 2×5631131² = 63419272678322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5631121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14870 + ... + 15243.

It is an arithmetic number, because the mean of its divisors is an integer number (813078).

Almost surely, 2^5631131 is an apocalyptic number.

5631131 is a deficient number, since it is larger than the sum of its proper divisors (873493).

5631131 is a wasteful number, since it uses less digits than its factorization.

5631131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30141.

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

The square root of 5631131 is about 2373.0004214075. Note that the first 3 decimals coincide. The cubic root of 5631131 is about 177.9092560234.

Adding to 5631131 its reverse (1311365), we get a palindrome (6942496).

It can be divided in two parts, 5 and 631131, that added together give a palindrome (631136).

The spelling of 5631131 in words is "five million, six hundred thirty-one thousand, one hundred thirty-one".