12531531210 has 64 divisors (see below), whose sum is σ = 32825295360. Its totient is φ = 3036514880.

The previous prime is 12531531197. The next prime is 12531531251. The reversal of 12531531210 is 1213513521.

12531531210 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 803749 + ... + 819191.

It is an arithmetic number, because the mean of its divisors is an integer number (512895240).

Almost surely, 2^12531531210 is an apocalyptic number.

12531531210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12531531210 is an abundant number, since it is smaller than the sum of its proper divisors (20293764150).

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

12531531210 is a wasteful number, since it uses less digits than its factorization.

12531531210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17923.

The product of its (nonzero) digits is 900, while the sum is 24.

The spelling of 12531531210 in words is "twelve billion, five hundred thirty-one million, five hundred thirty-one thousand, two hundred ten".