5631813 has 24 divisors (see below), whose sum is σ = 8954400. Its totient is φ = 3382560.

The previous prime is 5631793. The next prime is 5631817. The reversal of 5631813 is 3181365.

It is not a de Polignac number, because 5631813 - 2⁵ = 5631781 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5631817) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15963 + ... + 16311.

It is an arithmetic number, because the mean of its divisors is an integer number (373100).

Almost surely, 2^5631813 is an apocalyptic number.

It is an amenable number.

5631813 is a deficient number, since it is larger than the sum of its proper divisors (3322587).

5631813 is a wasteful number, since it uses less digits than its factorization.

5631813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529 (or 526 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 5631813 is about 2373.1441169891. The cubic root of 5631813 is about 177.9164380747.

The spelling of 5631813 in words is "five million, six hundred thirty-one thousand, eight hundred thirteen".