5631823 has 2 divisors, whose sum is σ = 5631824. Its totient is φ = 5631822.

The previous prime is 5631817. The next prime is 5631841. The reversal of 5631823 is 3281365.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5631823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5631791 and 5631800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5631893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2815911 + 2815912.

It is an arithmetic number, because the mean of its divisors is an integer number (2815912).

Almost surely, 2^5631823 is an apocalyptic number.

5631823 is the 1269-th centered heptagonal number.

5631823 is a deficient number, since it is larger than the sum of its proper divisors (1).

5631823 is an equidigital number, since it uses as much as digits as its factorization.

5631823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 28.

The square root of 5631823 is about 2373.1462238977. The cubic root of 5631823 is about 177.9165433791.

The spelling of 5631823 in words is "five million, six hundred thirty-one thousand, eight hundred twenty-three".