6311291 has 4 divisors (see below), whose sum is σ = 7212912. Its totient is φ = 5409672.

The previous prime is 6311251. The next prime is 6311297. The reversal of 6311291 is 1921136.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6311291 - 2²² = 2116987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6311297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450800 + ... + 450813.

It is an arithmetic number, because the mean of its divisors is an integer number (1803228).

Almost surely, 2^6311291 is an apocalyptic number.

6311291 is a deficient number, since it is larger than the sum of its proper divisors (901621).

6311291 is an equidigital number, since it uses as much as digits as its factorization.

6311291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901620.

The product of its digits is 324, while the sum is 23.

The square root of 6311291 is about 2512.2282937663. The cubic root of 6311291 is about 184.8017452500.

The spelling of 6311291 in words is "six million, three hundred eleven thousand, two hundred ninety-one".