12431537508 has 48 divisors (see below), whose sum is σ = 31278937536. Its totient is φ = 3820103040.

The previous prime is 12431537501. The next prime is 12431537519. The reversal of 12431537508 is 80573513421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (12431537501) 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, 69043 + ... + 172133.

It is an arithmetic number, because the mean of its divisors is an integer number (651644532).

Almost surely, 2^12431537508 is an apocalyptic number.

It is an amenable number.

12431537508 is an abundant number, since it is smaller than the sum of its proper divisors (18847400028).

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

12431537508 is a wasteful number, since it uses less digits than its factorization.

12431537508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103884 (or 103882 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 12431537508 in words is "twelve billion, four hundred thirty-one million, five hundred thirty-seven thousand, five hundred eight".