6431401 has 2 divisors, whose sum is σ = 6431402. Its totient is φ = 6431400.

The previous prime is 6431387. The next prime is 6431429. The reversal of 6431401 is 1041346.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6255001 + 176400 = 2501^2 + 420^2 .

It is a cyclic number.

It is not a de Polignac number, because 6431401 - 2⁷ = 6431273 is a prime.

6431401 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6431431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3215700 + 3215701.

It is an arithmetic number, because the mean of its divisors is an integer number (3215701).

Almost surely, 2^6431401 is an apocalyptic number.

It is an amenable number.

6431401 is a deficient number, since it is larger than the sum of its proper divisors (1).

6431401 is an equidigital number, since it uses as much as digits as its factorization.

6431401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 6431401 is about 2536.0207018082. The cubic root of 6431401 is about 185.9667050282.

Adding to 6431401 its reverse (1041346), we get a palindrome (7472747).

The spelling of 6431401 in words is "six million, four hundred thirty-one thousand, four hundred one".