128248031 has 8 divisors (see below), whose sum is σ = 133304304. Its totient is φ = 123275520.

The previous prime is 128248027. The next prime is 128248033. The reversal of 128248031 is 130842821.

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

It is a cyclic number.

It is not a de Polignac number, because 128248031 - 2² = 128248027 is a prime.

It is a super-2 number, since 2×128248031² = 32895114910753922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128247985 and 128248003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128248033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17810 + ... + 23951.

It is an arithmetic number, because the mean of its divisors is an integer number (16663038).

Almost surely, 2^128248031 is an apocalyptic number.

128248031 is a deficient number, since it is larger than the sum of its proper divisors (5056273).

128248031 is an equidigital number, since it uses as much as digits as its factorization.

128248031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41881.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 128248031 is about 11324.6647190988. The cubic root of 128248031 is about 504.2937302154.

The spelling of 128248031 in words is "one hundred twenty-eight million, two hundred forty-eight thousand, thirty-one".