105140323 has 4 divisors (see below), whose sum is σ = 105171048. Its totient is φ = 105109600.

The previous prime is 105140317. The next prime is 105140327. The reversal of 105140323 is 323041501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323041501 = 41 ⋅7879061.

It is a cyclic number.

It is not a de Polignac number, because 105140323 - 2¹⁷ = 105009251 is a prime.

It is a super-2 number, since 2×105140323² = 22108975041088658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105140323.

It is not an unprimeable number, because it can be changed into a prime (105140327) 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, 9478 + ... + 17323.

It is an arithmetic number, because the mean of its divisors is an integer number (26292762).

Almost surely, 2^105140323 is an apocalyptic number.

105140323 is a deficient number, since it is larger than the sum of its proper divisors (30725).

105140323 is an equidigital number, since it uses as much as digits as its factorization.

105140323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30724.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 105140323 is about 10253.7955411643. The cubic root of 105140323 is about 471.9794635204.

Adding to 105140323 its reverse (323041501), we get a palindrome (428181824).

The spelling of 105140323 in words is "one hundred five million, one hundred forty thousand, three hundred twenty-three".