105331321 has 4 divisors (see below), whose sum is σ = 105913444. Its totient is φ = 104749200.

The previous prime is 105331319. The next prime is 105331327. The reversal of 105331321 is 123133501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123133501 = 113 ⋅1089677.

It can be written as a sum of positive squares in 2 ways, for example, as 21058921 + 84272400 = 4589^2 + 9180^2 .

It is a cyclic number.

It is not a de Polignac number, because 105331321 - 2¹ = 105331319 is a prime.

It is a super-2 number, since 2×105331321² = 22189374367210082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105331327) 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, 290790 + ... + 291151.

It is an arithmetic number, because the mean of its divisors is an integer number (26478361).

Almost surely, 2^105331321 is an apocalyptic number.

It is an amenable number.

105331321 is a deficient number, since it is larger than the sum of its proper divisors (582123).

105331321 is an equidigital number, since it uses as much as digits as its factorization.

105331321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582122.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 105331321 is about 10263.1048421031. The cubic root of 105331321 is about 472.2650900651.

Adding to 105331321 its reverse (123133501), we get a palindrome (228464822).

The spelling of 105331321 in words is "one hundred five million, three hundred thirty-one thousand, three hundred twenty-one".