105331621 has 8 divisors (see below), whose sum is σ = 106686720. Its totient is φ = 103982208.

The previous prime is 105331619. The next prime is 105331661. The reversal of 105331621 is 126133501.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 105331621 - 2¹ = 105331619 is a prime.

It is a super-3 number, since 3×105331621³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105331592 and 105331601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105331601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45330 + ... + 47596.

It is an arithmetic number, because the mean of its divisors is an integer number (13335840).

Almost surely, 2^105331621 is an apocalyptic number.

It is an amenable number.

105331621 is a deficient number, since it is larger than the sum of its proper divisors (1355099).

105331621 is an equidigital number, since it uses as much as digits as its factorization.

105331621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2843.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 105331621 is about 10263.1194575529. The cubic root of 105331621 is about 472.2655384261.

The spelling of 105331621 in words is "one hundred five million, three hundred thirty-one thousand, six hundred twenty-one".