128003876731 has 2 divisors, whose sum is σ = 128003876732. Its totient is φ = 128003876730.

The previous prime is 128003876687. The next prime is 128003876761. The reversal of 128003876731 is 137678300821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128003876731 - 2¹⁵ = 128003843963 is a prime.

It is a super-2 number, since 2×128003876731² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (128003876761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64001938365 + 64001938366.

It is an arithmetic number, because the mean of its divisors is an integer number (64001938366).

Almost surely, 2^128003876731 is an apocalyptic number.

128003876731 is a deficient number, since it is larger than the sum of its proper divisors (1).

128003876731 is an equidigital number, since it uses as much as digits as its factorization.

128003876731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 128003876731 in words is "one hundred twenty-eight billion, three million, eight hundred seventy-six thousand, seven hundred thirty-one".