12231997 has 8 divisors (see below), whose sum is σ = 12695040. Its totient is φ = 11771760.

The previous prime is 12231977. The next prime is 12232001. The reversal of 12231997 is 79913221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12231997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12972 + ... + 13882.

It is an arithmetic number, because the mean of its divisors is an integer number (1586880).

Almost surely, 2^12231997 is an apocalyptic number.

It is an amenable number.

12231997 is a deficient number, since it is larger than the sum of its proper divisors (463043).

12231997 is an equidigital number, since it uses as much as digits as its factorization.

12231997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403.

The product of its digits is 6804, while the sum is 34.

The square root of 12231997 is about 3497.4271972409. The cubic root of 12231997 is about 230.4088317751.

The spelling of 12231997 in words is "twelve million, two hundred thirty-one thousand, nine hundred ninety-seven".