6401831 has 2 divisors, whose sum is σ = 6401832. Its totient is φ = 6401830.

The previous prime is 6401827. The next prime is 6401849. The reversal of 6401831 is 1381046.

6401831 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6401831 - 2² = 6401827 is a prime.

It is a super-2 number, since 2×6401831² = 81966880305122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6401797 and 6401806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6401891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200915 + 3200916.

It is an arithmetic number, because the mean of its divisors is an integer number (3200916).

Almost surely, 2^6401831 is an apocalyptic number.

6401831 is a deficient number, since it is larger than the sum of its proper divisors (1).

6401831 is an equidigital number, since it uses as much as digits as its factorization.

6401831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 6401831 is about 2530.1839854050. The cubic root of 6401831 is about 185.6812573837.

Adding to 6401831 its reverse (1381046), we get a palindrome (7782877).

The spelling of 6401831 in words is "six million, four hundred one thousand, eight hundred thirty-one".