128483531 has 8 divisors (see below), whose sum is σ = 140407344. Its totient is φ = 116600320.

The previous prime is 128483521. The next prime is 128483549. The reversal of 128483531 is 135384821.

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-128483531 is a prime.

It is a super-2 number, since 2×128483531² = 33016035476455922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128483491 and 128483500.

It is not an unprimeable number, because it can be changed into a prime (128483521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3326 + ... + 16371.

It is an arithmetic number, because the mean of its divisors is an integer number (17550918).

Almost surely, 2^128483531 is an apocalyptic number.

128483531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

128483531 is a deficient number, since it is larger than the sum of its proper divisors (11923813).

128483531 is a wasteful number, since it uses less digits than its factorization.

128483531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20301.

The product of its digits is 23040, while the sum is 35.

The square root of 128483531 is about 11335.0576090287. The cubic root of 128483531 is about 504.6022172242.

The spelling of 128483531 in words is "one hundred twenty-eight million, four hundred eighty-three thousand, five hundred thirty-one".