12281953 has 4 divisors (see below), whose sum is σ = 12360340. Its totient is φ = 12203568.

The previous prime is 12281947. The next prime is 12281963. The reversal of 12281953 is 35918221.

12281953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 6411024 + 5870929 = 2532^2 + 2423^2 .

It is a cyclic number.

It is not a de Polignac number, because 12281953 - 2¹³ = 12273761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12281963) 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, 38958 + ... + 39271.

It is an arithmetic number, because the mean of its divisors is an integer number (3090085).

Almost surely, 2^12281953 is an apocalyptic number.

It is an amenable number.

12281953 is a deficient number, since it is larger than the sum of its proper divisors (78387).

12281953 is an equidigital number, since it uses as much as digits as its factorization.

12281953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78386.

The product of its digits is 4320, while the sum is 31.

The square root of 12281953 is about 3504.5617415021. The cubic root of 12281953 is about 230.7220722468.

The spelling of 12281953 in words is "twelve million, two hundred eighty-one thousand, nine hundred fifty-three".