12357327731 has 32 divisors (see below), whose sum is σ = 14616391680. Its totient is φ = 10229117184.

The previous prime is 12357327637. The next prime is 12357327767. The reversal of 12357327731 is 13772375321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12357327731 is a prime.

It is a super-2 number, since 2×12357327731² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12357326731) 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 31 ways as a sum of consecutive naturals, for example, 8683286 + ... + 8684708.

It is an arithmetic number, because the mean of its divisors is an integer number (456762240).

Almost surely, 2^12357327731 is an apocalyptic number.

12357327731 is a deficient number, since it is larger than the sum of its proper divisors (2259063949).

12357327731 is a wasteful number, since it uses less digits than its factorization.

12357327731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835.

The product of its digits is 185220, while the sum is 41.

The spelling of 12357327731 in words is "twelve billion, three hundred fifty-seven million, three hundred twenty-seven thousand, seven hundred thirty-one".