12727319531 has 4 divisors (see below), whose sum is σ = 12917279592. Its totient is φ = 12537359472.

The previous prime is 12727319519. The next prime is 12727319593. The reversal of 12727319531 is 13591372721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12727319531 - 2¹⁰ = 12727318507 is a prime.

It is a super-2 number, since 2×12727319531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12727319431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94979930 + ... + 94980063.

It is an arithmetic number, because the mean of its divisors is an integer number (3229319898).

Almost surely, 2^12727319531 is an apocalyptic number.

12727319531 is a deficient number, since it is larger than the sum of its proper divisors (189960061).

12727319531 is an equidigital number, since it uses as much as digits as its factorization.

12727319531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189960060.

The product of its digits is 79380, while the sum is 41.

The spelling of 12727319531 in words is "twelve billion, seven hundred twenty-seven million, three hundred nineteen thousand, five hundred thirty-one".