3091385 has 8 divisors (see below), whose sum is σ = 4046976. Its totient is φ = 2248240.

The previous prime is 3091381. The next prime is 3091391. The reversal of 3091385 is 5831903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3091385 - 2² = 3091381 is a prime.

It is a super-2 number, since 2×3091385² = 19113322436450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3091381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28049 + ... + 28158.

It is an arithmetic number, because the mean of its divisors is an integer number (505872).

Almost surely, 2^3091385 is an apocalyptic number.

It is an amenable number.

3091385 is a deficient number, since it is larger than the sum of its proper divisors (955591).

3091385 is a wasteful number, since it uses less digits than its factorization.

3091385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56223.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 3091385 is about 1758.2334884764. The cubic root of 3091385 is about 145.6747780609.

The spelling of 3091385 in words is "three million, ninety-one thousand, three hundred eighty-five".