3103128 has 96 divisors (see below), whose sum is σ = 9884160. Its totient is φ = 861120.

The previous prime is 3103109. The next prime is 3103147. The reversal of 3103128 is 8213013.

It is an interprime number because it is at equal distance from previous prime (3103109) and next prime (3103147).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 3103128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23623 + ... + 23753.

It is an arithmetic number, because the mean of its divisors is an integer number (102960).

Almost surely, 2^3103128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3103128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4942080).

3103128 is an abundant number, since it is smaller than the sum of its proper divisors (6781032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3103128 is a wasteful number, since it uses less digits than its factorization.

3103128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 3103128 is about 1761.5697545087. The cubic root of 3103128 is about 145.8589994191.

It can be divided in two parts, 31031 and 28, that multiplied together give a palindrome (868868).

The spelling of 3103128 in words is "three million, one hundred three thousand, one hundred twenty-eight".