12256323406431 has 16 divisors (see below), whose sum is σ = 17930876626656. Its totient is φ = 7400044319616.

The previous prime is 12256323406423. The next prime is 12256323406463. The reversal of 12256323406431 is 13460432365221.

It is not a de Polignac number, because 12256323406431 - 2³ = 12256323406423 is a prime.

It is a super-2 number, since 2×12256323406431² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12256323401431) 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, 2964759280 + ... + 2964763413.

It is an arithmetic number, because the mean of its divisors is an integer number (1120679789166).

Almost surely, 2^{12256323406431} is an apocalyptic number.

12256323406431 is a deficient number, since it is larger than the sum of its proper divisors (5674553220225).

12256323406431 is a wasteful number, since it uses less digits than its factorization.

12256323406431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5929522762.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 12256323406431 in words is "twelve trillion, two hundred fifty-six billion, three hundred twenty-three million, four hundred six thousand, four hundred thirty-one".