3161287 has 4 divisors (see below), whose sum is σ = 3263296. Its totient is φ = 3059280.

The previous prime is 3161273. The next prime is 3161293. The reversal of 3161287 is 7821613.

3161287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7821613 = 661 ⋅11833.

It is a cyclic number.

It is not a de Polignac number, because 3161287 - 2⁷ = 3161159 is a prime.

It is a Duffinian number.

3161287 is a lucky number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161227) by changing a digit.

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, 50958 + ... + 51019.

It is an arithmetic number, because the mean of its divisors is an integer number (815824).

Almost surely, 2^3161287 is an apocalyptic number.

3161287 is a deficient number, since it is larger than the sum of its proper divisors (102009).

3161287 is a wasteful number, since it uses less digits than its factorization.

3161287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102008.

The product of its digits is 2016, while the sum is 28.

The square root of 3161287 is about 1778.0008436443. Note that the first 3 decimals coincide. The cubic root of 3161287 is about 146.7645977041.

The spelling of 3161287 in words is "three million, one hundred sixty-one thousand, two hundred eighty-seven".