12810953 has 6 divisors (see below), whose sum is σ = 13268814. Its totient is φ = 12368384.

The previous prime is 12810949. The next prime is 12810961. The reversal of 12810953 is 35901821.

It can be written as a sum of positive squares in 3 ways, for example, as 644809 + 12166144 = 803^2 + 3488^2 .

It is not a de Polignac number, because 12810953 - 2² = 12810949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12810913) 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 5 ways as a sum of consecutive naturals, for example, 6776 + ... + 8457.

It is an arithmetic number, because the mean of its divisors is an integer number (2211469).

Almost surely, 2^12810953 is an apocalyptic number.

It is an amenable number.

12810953 is a deficient number, since it is larger than the sum of its proper divisors (457861).

12810953 is an equidigital number, since it uses as much as digits as its factorization.

12810953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15291 (or 15262 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 12810953 is about 3579.2391649623. The cubic root of 12810953 is about 233.9881224643.

The spelling of 12810953 in words is "twelve million, eight hundred ten thousand, nine hundred fifty-three".