12275831 has 4 divisors (see below), whose sum is σ = 12299064. Its totient is φ = 12252600.

The previous prime is 12275827. The next prime is 12275839. The reversal of 12275831 is 13857221.

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

It is a cyclic number.

It is not a de Polignac number, because 12275831 - 2² = 12275827 is a prime.

It is a super-2 number, since 2×12275831² = 301392053481122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12275794 and 12275803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12275839) 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, 10805 + ... + 11886.

It is an arithmetic number, because the mean of its divisors is an integer number (3074766).

Almost surely, 2^12275831 is an apocalyptic number.

12275831 is a deficient number, since it is larger than the sum of its proper divisors (23233).

12275831 is an equidigital number, since it uses as much as digits as its factorization.

12275831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23232.

The product of its digits is 3360, while the sum is 29.

The square root of 12275831 is about 3503.6881995977. The cubic root of 12275831 is about 230.6837310244.

The spelling of 12275831 in words is "twelve million, two hundred seventy-five thousand, eight hundred thirty-one".