105312253 has 4 divisors (see below), whose sum is σ = 108943740. Its totient is φ = 101680768.

The previous prime is 105312217. The next prime is 105312283. The reversal of 105312253 is 352213501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87647044 + 17665209 = 9362^2 + 4203^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105312253 is a prime.

It is a super-2 number, since 2×105312253² = 22181341263872018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105312283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1815700 + ... + 1815757.

It is an arithmetic number, because the mean of its divisors is an integer number (27235935).

Almost surely, 2^105312253 is an apocalyptic number.

It is an amenable number.

105312253 is a deficient number, since it is larger than the sum of its proper divisors (3631487).

105312253 is an equidigital number, since it uses as much as digits as its factorization.

105312253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3631486.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 105312253 is about 10262.1758414091. The cubic root of 105312253 is about 472.2365904884.

Adding to 105312253 its reverse (352213501), we get a palindrome (457525754).

The spelling of 105312253 in words is "one hundred five million, three hundred twelve thousand, two hundred fifty-three".