3128831 has 8 divisors (see below), whose sum is σ = 3248544. Its totient is φ = 3011040.

The previous prime is 3128821. The next prime is 3128843. The reversal of 3128831 is 1388213.

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 3128831 - 2⁶ = 3128767 is a prime.

It is a super-2 number, since 2×3128831² = 19579166853122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3128831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3128821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3401 + ... + 4221.

It is an arithmetic number, because the mean of its divisors is an integer number (406068).

Almost surely, 2^3128831 is an apocalyptic number.

3128831 is a deficient number, since it is larger than the sum of its proper divisors (119713).

3128831 is a wasteful number, since it uses less digits than its factorization.

3128831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961.

The product of its digits is 1152, while the sum is 26.

The square root of 3128831 is about 1768.8501915086. The cubic root of 3128831 is about 146.2606060441.

The spelling of 3128831 in words is "three million, one hundred twenty-eight thousand, eight hundred thirty-one".