12906433431 has 16 divisors (see below), whose sum is σ = 19444723200. Its totient is φ = 8458452504.

The previous prime is 12906433429. The next prime is 12906433447. The reversal of 12906433431 is 13433460921.

12906433431 is a `hidden beast` number, since 1 + 2 + 9 + 0 + 643 + 3 + 4 + 3 + 1 = 666.

It is not a de Polignac number, because 12906433431 - 2¹ = 12906433429 is a prime.

It is a super-2 number, since 2×12906433431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12906433451) 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, 4049391 + ... + 4052576.

It is an arithmetic number, because the mean of its divisors is an integer number (1215295200).

Almost surely, 2^12906433431 is an apocalyptic number.

12906433431 is a deficient number, since it is larger than the sum of its proper divisors (6538289769).

12906433431 is an equidigital number, since it uses as much as digits as its factorization.

12906433431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8102035 (or 8102029 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The spelling of 12906433431 in words is "twelve billion, nine hundred six million, four hundred thirty-three thousand, four hundred thirty-one".