12471729531 has 16 divisors (see below), whose sum is σ = 17211516960. Its totient is φ = 8023518720.

The previous prime is 12471729511. The next prime is 12471729541. The reversal of 12471729531 is 13592717421.

It is not a de Polignac number, because 12471729531 - 2³⁰ = 11397987707 is a prime.

It is a super-2 number, since 2×12471729531² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12471729511) 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, 131091 + ... + 205251.

It is an arithmetic number, because the mean of its divisors is an integer number (1075719810).

Almost surely, 2^12471729531 is an apocalyptic number.

12471729531 is a deficient number, since it is larger than the sum of its proper divisors (4739787429).

12471729531 is a wasteful number, since it uses less digits than its factorization.

12471729531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76126.

The product of its digits is 105840, while the sum is 42.

The spelling of 12471729531 in words is "twelve billion, four hundred seventy-one million, seven hundred twenty-nine thousand, five hundred thirty-one".