6481931 has 2 divisors, whose sum is σ = 6481932. Its totient is φ = 6481930.

The previous prime is 6481927. The next prime is 6481939. The reversal of 6481931 is 1391846.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6481931 - 2² = 6481927 is a prime.

It is a super-2 number, since 2×6481931² = 84030858977522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6481939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3240965 + 3240966.

It is an arithmetic number, because the mean of its divisors is an integer number (3240966).

Almost surely, 2^6481931 is an apocalyptic number.

6481931 is a deficient number, since it is larger than the sum of its proper divisors (1).

6481931 is an equidigital number, since it uses as much as digits as its factorization.

6481931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 32.

The square root of 6481931 is about 2545.9636682404. The cubic root of 6481931 is about 186.4524672402.

The spelling of 6481931 in words is "six million, four hundred eighty-one thousand, nine hundred thirty-one".