3281731 has 4 divisors (see below), whose sum is σ = 3474792. Its totient is φ = 3088672.

The previous prime is 3281723. The next prime is 3281767. The reversal of 3281731 is 1371823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1371823 = 859 ⋅1597.

It is a cyclic number.

It is not a de Polignac number, because 3281731 - 2³ = 3281723 is a prime.

It is a super-2 number, since 2×3281731² = 21539516712722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3281696 and 3281705.

It is not an unprimeable number, because it can be changed into a prime (3281701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96505 + ... + 96538.

It is an arithmetic number, because the mean of its divisors is an integer number (868698).

Almost surely, 2^3281731 is an apocalyptic number.

3281731 is a deficient number, since it is larger than the sum of its proper divisors (193061).

3281731 is a wasteful number, since it uses less digits than its factorization.

3281731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193060.

The product of its digits is 1008, while the sum is 25.

The square root of 3281731 is about 1811.5548570220. The cubic root of 3281731 is about 148.6053094839.

The spelling of 3281731 in words is "three million, two hundred eighty-one thousand, seven hundred thirty-one".