12312042231 has 16 divisors (see below), whose sum is σ = 16465760640. Its totient is φ = 8183202720.

The previous prime is 12312042227. The next prime is 12312042247. The reversal of 12312042231 is 13224021321.

It is not a de Polignac number, because 12312042231 - 2² = 12312042227 is a prime.

It is a super-2 number, since 2×12312042231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12312042198 and 12312042207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312042271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3783201 + ... + 3786453.

It is an arithmetic number, because the mean of its divisors is an integer number (1029110040).

Almost surely, 2^12312042231 is an apocalyptic number.

12312042231 is a deficient number, since it is larger than the sum of its proper divisors (4153718409).

12312042231 is a wasteful number, since it uses less digits than its factorization.

12312042231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6686.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12312042231 its reverse (13224021321), we get a palindrome (25536063552).

The spelling of 12312042231 in words is "twelve billion, three hundred twelve million, forty-two thousand, two hundred thirty-one".