10330991 has 4 divisors (see below), whose sum is σ = 11270184. Its totient is φ = 9391800.

The previous prime is 10330961. The next prime is 10331011. The reversal of 10330991 is 19903301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19903301 = 11 ⋅1809391.

It is not a de Polignac number, because 10330991 - 2¹⁴ = 10314607 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10330991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10330961) 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, 469580 + ... + 469601.

It is an arithmetic number, because the mean of its divisors is an integer number (2817546).

Almost surely, 2^10330991 is an apocalyptic number.

10330991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10330991 is a deficient number, since it is larger than the sum of its proper divisors (939193).

10330991 is an equidigital number, since it uses as much as digits as its factorization.

10330991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939192.

The product of its (nonzero) digits is 729, while the sum is 26.

The square root of 10330991 is about 3214.1859000375. The cubic root of 10330991 is about 217.7947103680.

The spelling of 10330991 in words is "ten million, three hundred thirty thousand, nine hundred ninety-one".