12311303231 has 8 divisors (see below), whose sum is σ = 12366836160. Its totient is φ = 12255804288.

The previous prime is 12311303201. The next prime is 12311303233. The reversal of 12311303231 is 13230311321.

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

It is a cyclic number.

It is not a de Polignac number, because 12311303231 - 2¹⁴ = 12311286847 is a prime.

It is a super-2 number, since 2×12311303231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311303233) 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, 963275 + ... + 975971.

It is an arithmetic number, because the mean of its divisors is an integer number (1545854520).

Almost surely, 2^12311303231 is an apocalyptic number.

12311303231 is a deficient number, since it is larger than the sum of its proper divisors (55532929).

12311303231 is a wasteful number, since it uses less digits than its factorization.

12311303231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16993.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 12311303231 its reverse (13230311321), we get a palindrome (25541614552).

The spelling of 12311303231 in words is "twelve billion, three hundred eleven million, three hundred three thousand, two hundred thirty-one".