6310991 has 4 divisors (see below), whose sum is σ = 6369000. Its totient is φ = 6252984.

The previous prime is 6310963. The next prime is 6311023. The reversal of 6310991 is 1990136.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6310991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6310921) 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, 28841 + ... + 29058.

It is an arithmetic number, because the mean of its divisors is an integer number (1592250).

Almost surely, 2^6310991 is an apocalyptic number.

6310991 is a deficient number, since it is larger than the sum of its proper divisors (58009).

6310991 is a wasteful number, since it uses less digits than its factorization.

6310991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58008.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 6310991 is about 2512.1685851073. The cubic root of 6310991 is about 184.7988170904.

The spelling of 6310991 in words is "six million, three hundred ten thousand, nine hundred ninety-one".