12231746 has 4 divisors (see below), whose sum is σ = 18347622. Its totient is φ = 6115872.

The previous prime is 12231733. The next prime is 12231757. The reversal of 12231746 is 64713221.

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

It can be written as a sum of positive squares in only one way, i.e., 6175225 + 6056521 = 2485^2 + 2461^2 .

It is a super-2 number, since 2×12231746² = 299231220417032, which contains 22 as substring.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3057935 + ... + 3057938.

Almost surely, 2^12231746 is an apocalyptic number.

12231746 is a deficient number, since it is larger than the sum of its proper divisors (6115876).

12231746 is an equidigital number, since it uses as much as digits as its factorization.

12231746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6115875.

The product of its digits is 2016, while the sum is 26.

The square root of 12231746 is about 3497.3913135364. The cubic root of 12231746 is about 230.4072557715.

Adding to 12231746 its reverse (64713221), we get a palindrome (76944967).

The spelling of 12231746 in words is "twelve million, two hundred thirty-one thousand, seven hundred forty-six".