12953281 has 4 divisors (see below), whose sum is σ = 14130864. Its totient is φ = 11775700.

The previous prime is 12953279. The next prime is 12953287. The reversal of 12953281 is 18235921.

12953281 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18235921 = 11 ⋅1657811.

It is a cyclic number.

It is not a de Polignac number, because 12953281 - 2¹ = 12953279 is a prime.

It is a super-2 number, since 2×12953281² = 335574977329922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12953287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588775 + ... + 588796.

It is an arithmetic number, because the mean of its divisors is an integer number (3532716).

Almost surely, 2^12953281 is an apocalyptic number.

12953281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12953281 is a deficient number, since it is larger than the sum of its proper divisors (1177583).

12953281 is a wasteful number, since it uses less digits than its factorization.

12953281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177582.

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

The square root of 12953281 is about 3599.0666845725. The cubic root of 12953281 is about 234.8514588672.

The spelling of 12953281 in words is "twelve million, nine hundred fifty-three thousand, two hundred eighty-one".