83128351 has 8 divisors (see below), whose sum is σ = 88186320. Its totient is φ = 78089088.

The previous prime is 83128349. The next prime is 83128373. The reversal of 83128351 is 15382138.

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 83128351 - 2¹ = 83128349 is a prime.

It is a super-3 number, since 3×83128351³ (a number of 25 digits) contains 333 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 (83128301) 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, 5080 + ... + 13858.

It is an arithmetic number, because the mean of its divisors is an integer number (11023290).

Almost surely, 2^83128351 is an apocalyptic number.

83128351 is a deficient number, since it is larger than the sum of its proper divisors (5057969).

83128351 is a wasteful number, since it uses less digits than its factorization.

83128351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9353.

The product of its digits is 5760, while the sum is 31.

The square root of 83128351 is about 9117.4750342406. The cubic root of 83128351 is about 436.4318011950.

The spelling of 83128351 in words is "eighty-three million, one hundred twenty-eight thousand, three hundred fifty-one".