3091340 has 48 divisors (see below), whose sum is σ = 7547904. Its totient is φ = 1041600.

The previous prime is 3091327. The next prime is 3091367. The reversal of 3091340 is 431903.

3091340 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9785 + ... + 10095.

It is an arithmetic number, because the mean of its divisors is an integer number (157248).

Almost surely, 2^3091340 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 3091340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3773952).

3091340 is an abundant number, since it is smaller than the sum of its proper divisors (4456564).

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

3091340 is a wasteful number, since it uses less digits than its factorization.

3091340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 3091340 is about 1758.2206914947. The cubic root of 3091340 is about 145.6740712152.

The spelling of 3091340 in words is "three million, ninety-one thousand, three hundred forty".