5631943 has 2 divisors, whose sum is σ = 5631944. Its totient is φ = 5631942.

The previous prime is 5631911. The next prime is 5631949. The reversal of 5631943 is 3491365.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5631943 - 2⁵ = 5631911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5631949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2815971 + 2815972.

It is an arithmetic number, because the mean of its divisors is an integer number (2815972).

Almost surely, 2^5631943 is an apocalyptic number.

5631943 is a deficient number, since it is larger than the sum of its proper divisors (1).

5631943 is an equidigital number, since it uses as much as digits as its factorization.

5631943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 31.

The square root of 5631943 is about 2373.1715066552. The cubic root of 5631943 is about 177.9178070216.

The spelling of 5631943 in words is "five million, six hundred thirty-one thousand, nine hundred forty-three".