10391331 has 16 divisors (see below), whose sum is σ = 14662656. Its totient is φ = 6532416.

The previous prime is 10391321. The next prime is 10391341. The reversal of 10391331 is 13319301.

10391331 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (10391321) and next prime (10391341).

It is not a de Polignac number, because 10391331 - 2⁵ = 10391299 is a prime.

It is a super-2 number, since 2×10391331² = 215959519903122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10391298 and 10391307.

It is not an unprimeable number, because it can be changed into a prime (10391321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4006 + ... + 6068.

It is an arithmetic number, because the mean of its divisors is an integer number (916416).

Almost surely, 2^10391331 is an apocalyptic number.

10391331 is a deficient number, since it is larger than the sum of its proper divisors (4271325).

10391331 is a wasteful number, since it uses less digits than its factorization.

10391331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162.

The product of its (nonzero) digits is 243, while the sum is 21.

The square root of 10391331 is about 3223.5587477197. The cubic root of 10391331 is about 218.2179104907.

The spelling of 10391331 in words is "ten million, three hundred ninety-one thousand, three hundred thirty-one".