8256881401231 has 2 divisors, whose sum is σ = 8256881401232. Its totient is φ = 8256881401230.

The previous prime is 8256881401217. The next prime is 8256881401247. The reversal of 8256881401231 is 1321041886528.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8256881401231 - 2¹¹ = 8256881399183 is a prime.

It is a super-2 number, since 2×8256881401231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8256881401931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4128440700615 + 4128440700616.

It is an arithmetic number, because the mean of its divisors is an integer number (4128440700616).

Almost surely, 2^{8256881401231} is an apocalyptic number.

8256881401231 is a deficient number, since it is larger than the sum of its proper divisors (1).

8256881401231 is an equidigital number, since it uses as much as digits as its factorization.

8256881401231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 737280, while the sum is 49.

The spelling of 8256881401231 in words is "eight trillion, two hundred fifty-six billion, eight hundred eighty-one million, four hundred one thousand, two hundred thirty-one".