3113840 has 20 divisors (see below), whose sum is σ = 7239864. Its totient is φ = 1245504.

The previous prime is 3113837. The next prime is 3113861. The reversal of 3113840 is 483113.

It is a happy number.

3113840 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19382 + ... + 19541.

Almost surely, 2^3113840 is an apocalyptic number.

It is an amenable number.

3113840 is an abundant number, since it is smaller than the sum of its proper divisors (4126024).

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

3113840 is a wasteful number, since it uses less digits than its factorization.

3113840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38936 (or 38930 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 3113840 is about 1764.6076051066. The cubic root of 3113840 is about 146.0266417886.

Adding to 3113840 its reverse (483113), we get a palindrome (3596953).

The spelling of 3113840 in words is "three million, one hundred thirteen thousand, eight hundred forty".