128248813882631 has 6 divisors (see below), whose sum is σ = 138872975979600. Its totient is φ = 118383520506888.

The previous prime is 128248813882603. The next prime is 128248813882697. The reversal of 128248813882631 is 136288318842821.

It is not a de Polignac number, because 128248813882631 - 2¹⁰ = 128248813881607 is a prime.

It is a super-2 number, since 2×128248813882631² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128248813882601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 379434360431 + ... + 379434360768.

It is an arithmetic number, because the mean of its divisors is an integer number (23145495996600).

Almost surely, 2^{128248813882631} is an apocalyptic number.

128248813882631 is a deficient number, since it is larger than the sum of its proper divisors (10624162096969).

128248813882631 is an equidigital number, since it uses as much as digits as its factorization.

128248813882631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758868721225 (or 758868721212 counting only the distinct ones).

The product of its digits is 56623104, while the sum is 65.

The spelling of 128248813882631 in words is "one hundred twenty-eight trillion, two hundred forty-eight billion, eight hundred thirteen million, eight hundred eighty-two thousand, six hundred thirty-one".