128247882731 has 8 divisors (see below), whose sum is σ = 128808081600. Its totient is φ = 127687916160.

The previous prime is 128247882671. The next prime is 128247882767. The reversal of 128247882731 is 137288742821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128247882731 is a prime.

It is a super-2 number, since 2×128247882731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128247812731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1098590 + ... + 1209708.

It is an arithmetic number, because the mean of its divisors is an integer number (16101010200).

Almost surely, 2^128247882731 is an apocalyptic number.

128247882731 is a deficient number, since it is larger than the sum of its proper divisors (560198869).

128247882731 is a wasteful number, since it uses less digits than its factorization.

128247882731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116149.

The product of its digits is 2408448, while the sum is 53.

The spelling of 128247882731 in words is "one hundred twenty-eight billion, two hundred forty-seven million, eight hundred eighty-two thousand, seven hundred thirty-one".