6431144 has 8 divisors (see below), whose sum is σ = 12058410. Its totient is φ = 3215568.

The previous prime is 6431141. The next prime is 6431171. The reversal of 6431144 is 4411346.

It can be written as a sum of positive squares in only one way, i.e., 6300100 + 131044 = 2510^2 + 362^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×6431144² = 82719226297472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6431141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401939 + ... + 401954.

Almost surely, 2^6431144 is an apocalyptic number.

It is an amenable number.

6431144 is a deficient number, since it is larger than the sum of its proper divisors (5627266).

6431144 is a wasteful number, since it uses less digits than its factorization.

6431144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803899 (or 803895 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 6431144 is about 2535.9700313687. The cubic root of 6431144 is about 185.9642279069.

The spelling of 6431144 in words is "six million, four hundred thirty-one thousand, one hundred forty-four".