5640031 has 2 divisors, whose sum is σ = 5640032. Its totient is φ = 5640030.

The previous prime is 5639989. The next prime is 5640043. The reversal of 5640031 is 1300465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5640031 - 2¹⁹ = 5115743 is a prime.

It is a super-2 number, since 2×5640031² = 63619899361922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5639990 and 5640008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5640071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2820015 + 2820016.

It is an arithmetic number, because the mean of its divisors is an integer number (2820016).

Almost surely, 2^5640031 is an apocalyptic number.

5640031 is a deficient number, since it is larger than the sum of its proper divisors (1).

5640031 is an equidigital number, since it uses as much as digits as its factorization.

5640031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 5640031 is about 2374.8749440760. The cubic root of 5640031 is about 178.0029351870.

Adding to 5640031 its reverse (1300465), we get a palindrome (6940496).

The spelling of 5640031 in words is "five million, six hundred forty thousand, thirty-one".