10631321 has 4 divisors (see below), whose sum is σ = 10918692. Its totient is φ = 10343952.

The previous prime is 10631311. The next prime is 10631333. The reversal of 10631321 is 12313601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12313601 = 71 ⋅173431.

It can be written as a sum of positive squares in 2 ways, for example, as 9388096 + 1243225 = 3064^2 + 1115^2 .

It is a cyclic number.

It is not a de Polignac number, because 10631321 - 2¹⁰ = 10630297 is a prime.

It is a super-2 number, since 2×10631321² = 226049972410082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10631321.

It is not an unprimeable number, because it can be changed into a prime (10631311) 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, 143630 + ... + 143703.

It is an arithmetic number, because the mean of its divisors is an integer number (2729673).

Almost surely, 2^10631321 is an apocalyptic number.

It is an amenable number.

10631321 is a deficient number, since it is larger than the sum of its proper divisors (287371).

10631321 is an equidigital number, since it uses as much as digits as its factorization.

10631321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287370.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 10631321 is about 3260.5706555755. The cubic root of 10631321 is about 219.8850708248.

Adding to 10631321 its reverse (12313601), we get a palindrome (22944922).

The spelling of 10631321 in words is "ten million, six hundred thirty-one thousand, three hundred twenty-one".