12275531 has 4 divisors (see below), whose sum is σ = 12295152. Its totient is φ = 12255912.

The previous prime is 12275509. The next prime is 12275567. The reversal of 12275531 is 13557221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13557221 = 107 ⋅126703.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12275531 is a prime.

It is a super-2 number, since 2×12275531² = 301377322663922, 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 12275531.

It is not an unprimeable number, because it can be changed into a prime (12275591) 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, 8840 + ... + 10133.

It is an arithmetic number, because the mean of its divisors is an integer number (3073788).

Almost surely, 2^12275531 is an apocalyptic number.

12275531 is a deficient number, since it is larger than the sum of its proper divisors (19621).

12275531 is an equidigital number, since it uses as much as digits as its factorization.

12275531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19620.

The product of its digits is 2100, while the sum is 26.

The square root of 12275531 is about 3503.6453873073. The cubic root of 12275531 is about 230.6818518391.

The spelling of 12275531 in words is "twelve million, two hundred seventy-five thousand, five hundred thirty-one".