3181248 has 112 divisors (see below), whose sum is σ = 10728960. Its totient is φ = 905472.

The previous prime is 3181237. The next prime is 3181249. The reversal of 3181248 is 8421813.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (3181249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11965 + ... + 12227.

Almost surely, 2^3181248 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 3181248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5364480).

3181248 is an abundant number, since it is smaller than the sum of its proper divisors (7547712).

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

3181248 is a wasteful number, since it uses less digits than its factorization.

3181248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 275 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 3181248 is about 1783.6053375116. The cubic root of 3181248 is about 147.0728501884.

The spelling of 3181248 in words is "three million, one hundred eighty-one thousand, two hundred forty-eight".