12229831 has 4 divisors (see below), whose sum is σ = 12293392. Its totient is φ = 12166272.

The previous prime is 12229807. The next prime is 12229843. The reversal of 12229831 is 13892221.

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 12229831 - 2⁵ = 12229799 is a prime.

It is a super-2 number, since 2×12229831² = 299137532577122, 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 12229831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12229891) 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, 31491 + ... + 31876.

It is an arithmetic number, because the mean of its divisors is an integer number (3073348).

Almost surely, 2^12229831 is an apocalyptic number.

12229831 is a deficient number, since it is larger than the sum of its proper divisors (63561).

12229831 is an equidigital number, since it uses as much as digits as its factorization.

12229831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63560.

The product of its digits is 1728, while the sum is 28.

The square root of 12229831 is about 3497.1175273359. The cubic root of 12229831 is about 230.3952309708.

The spelling of 12229831 in words is "twelve million, two hundred twenty-nine thousand, eight hundred thirty-one".