12531433206 has 32 divisors (see below), whose sum is σ = 26183969280. Its totient is φ = 3990730304.

The previous prime is 12531433199. The next prime is 12531433217. The reversal of 12531433206 is 60233413521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61666 + ... + 169898.

It is an arithmetic number, because the mean of its divisors is an integer number (818249040).

Almost surely, 2^12531433206 is an apocalyptic number.

12531433206 is an abundant number, since it is smaller than the sum of its proper divisors (13652536074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12531433206 is a wasteful number, since it uses less digits than its factorization.

12531433206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109100.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 12531433206 its reverse (60233413521), we get a palindrome (72764846727).

The spelling of 12531433206 in words is "twelve billion, five hundred thirty-one million, four hundred thirty-three thousand, two hundred six".