6431091 has 8 divisors (see below), whose sum is σ = 8586960. Its totient is φ = 4281312.

The previous prime is 6431039. The next prime is 6431093. The reversal of 6431091 is 1901346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6431091 - 2⁹ = 6430579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6431093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2361 + ... + 4293.

It is an arithmetic number, because the mean of its divisors is an integer number (1073370).

Almost surely, 2^6431091 is an apocalyptic number.

6431091 is a deficient number, since it is larger than the sum of its proper divisors (2155869).

6431091 is a wasteful number, since it uses less digits than its factorization.

6431091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045.

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

The square root of 6431091 is about 2535.9595816968. The cubic root of 6431091 is about 185.9637170527.

The spelling of 6431091 in words is "six million, four hundred thirty-one thousand, ninety-one".