3181641 has 8 divisors (see below), whose sum is σ = 4345824. Its totient is φ = 2069280.

The previous prime is 3181637. The next prime is 3181657. The reversal of 3181641 is 1461813.

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

It is not a de Polignac number, because 3181641 - 2² = 3181637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3181681) 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, 12811 + ... + 13056.

It is an arithmetic number, because the mean of its divisors is an integer number (543228).

Almost surely, 2^3181641 is an apocalyptic number.

It is an amenable number.

3181641 is a deficient number, since it is larger than the sum of its proper divisors (1164183).

3181641 is a wasteful number, since it uses less digits than its factorization.

3181641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25911.

The product of its digits is 576, while the sum is 24.

The square root of 3181641 is about 1783.7155042215. The cubic root of 3181641 is about 147.0789062236.

The spelling of 3181641 in words is "three million, one hundred eighty-one thousand, six hundred forty-one".