12431128446 has 24 divisors (see below), whose sum is σ = 29382667704. Its totient is φ = 3767008560.

The previous prime is 12431128393. The next prime is 12431128447. The reversal of 12431128446 is 64482113421.

12431128446 is a `hidden beast` number, since 1 + 24 + 311 + 284 + 46 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 12431128446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12431128447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31391541 + ... + 31391936.

It is an arithmetic number, because the mean of its divisors is an integer number (1224277821).

Almost surely, 2^12431128446 is an apocalyptic number.

12431128446 is an abundant number, since it is smaller than the sum of its proper divisors (16951539258).

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

12431128446 is a wasteful number, since it uses less digits than its factorization.

12431128446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62783496 (or 62783493 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The spelling of 12431128446 in words is "twelve billion, four hundred thirty-one million, one hundred twenty-eight thousand, four hundred forty-six".