12431564236 has 48 divisors (see below), whose sum is σ = 26821295424. Its totient is φ = 4909602816.

The previous prime is 12431564209. The next prime is 12431564263. The reversal of 12431564236 is 63246513421.

It is an interprime number because it is at equal distance from previous prime (12431564209) and next prime (12431564263).

It is a junction number, because it is equal to n+sod(n) for n = 12431564195 and 12431564204.

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, 187056 + ... + 244648.

It is an arithmetic number, because the mean of its divisors is an integer number (558776988).

Almost surely, 2^12431564236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12431564236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13410647712).

12431564236 is an abundant number, since it is smaller than the sum of its proper divisors (14389731188).

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

12431564236 is a wasteful number, since it uses less digits than its factorization.

12431564236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58210 (or 58208 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

The spelling of 12431564236 in words is "twelve billion, four hundred thirty-one million, five hundred sixty-four thousand, two hundred thirty-six".