105012331 has 4 divisors (see below), whose sum is σ = 105140752. Its totient is φ = 104883912.

The previous prime is 105012329. The next prime is 105012343. The reversal of 105012331 is 133210501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133210501 = 19 ⋅7011079.

It is a cyclic number.

It is not a de Polignac number, because 105012331 - 2¹ = 105012329 is a prime.

It is a super-2 number, since 2×105012331² = 22055179324107122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105012371) 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 3 ways as a sum of consecutive naturals, for example, 62976 + ... + 64621.

It is an arithmetic number, because the mean of its divisors is an integer number (26285188).

Almost surely, 2^105012331 is an apocalyptic number.

105012331 is a deficient number, since it is larger than the sum of its proper divisors (128421).

105012331 is an equidigital number, since it uses as much as digits as its factorization.

105012331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128420.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 105012331 is about 10247.5524394852. The cubic root of 105012331 is about 471.7878652086.

Adding to 105012331 its reverse (133210501), we get a palindrome (238222832).

The spelling of 105012331 in words is "one hundred five million, twelve thousand, three hundred thirty-one".