6491031 has 4 divisors (see below), whose sum is σ = 8654712. Its totient is φ = 4327352.

The previous prime is 6491011. The next prime is 6491039. The reversal of 6491031 is 1301946.

6491031 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6491031 - 2⁵ = 6490999 is a prime.

It is a super-2 number, since 2×6491031² = 84266966885922, which contains 22 as substring.

It is a D-number.

6491031 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6490992 and 6491010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6491039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1081836 + ... + 1081841.

It is an arithmetic number, because the mean of its divisors is an integer number (2163678).

Almost surely, 2^6491031 is an apocalyptic number.

6491031 is a deficient number, since it is larger than the sum of its proper divisors (2163681).

6491031 is a wasteful number, since it uses less digits than its factorization.

6491031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2163680.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 6491031 is about 2547.7501839859. The cubic root of 6491031 is about 186.5396801433.

Adding to 6491031 its reverse (1301946), we get a palindrome (7792977).

The spelling of 6491031 in words is "six million, four hundred ninety-one thousand, thirty-one".