12243605931 has 12 divisors (see below), whose sum is σ = 17704257480. Its totient is φ = 8153612160.

The previous prime is 12243605851. The next prime is 12243605963. The reversal of 12243605931 is 13950634221.

12243605931 is a `hidden beast` number, since 1 + 2 + 2 + 4 + 3 + 60 + 593 + 1 = 666.

It is not a de Polignac number, because 12243605931 - 2³³ = 3653671339 is a prime.

It is a super-2 number, since 2×12243605931² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12243605981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 723825 + ... + 740546.

It is an arithmetic number, because the mean of its divisors is an integer number (1475354790).

Almost surely, 2^12243605931 is an apocalyptic number.

12243605931 is a deficient number, since it is larger than the sum of its proper divisors (5460651549).

12243605931 is a wasteful number, since it uses less digits than its factorization.

12243605931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465306 (or 1465303 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 12243605931 in words is "twelve billion, two hundred forty-three million, six hundred five thousand, nine hundred thirty-one".