12529843831 has 4 divisors (see below), whose sum is σ = 12821235592. Its totient is φ = 12238452072.

The previous prime is 12529843819. The next prime is 12529843847. The reversal of 12529843831 is 13834892521.

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 12529843831 - 2¹³ = 12529835639 is a prime.

It is a super-2 number, since 2×12529843831² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12529843811) 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, 145695816 + ... + 145695901.

It is an arithmetic number, because the mean of its divisors is an integer number (3205308898).

Almost surely, 2^12529843831 is an apocalyptic number.

12529843831 is a deficient number, since it is larger than the sum of its proper divisors (291391761).

12529843831 is an equidigital number, since it uses as much as digits as its factorization.

12529843831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291391760.

The product of its digits is 414720, while the sum is 46.

The spelling of 12529843831 in words is "twelve billion, five hundred twenty-nine million, eight hundred forty-three thousand, eight hundred thirty-one".