3165731 has 4 divisors (see below), whose sum is σ = 3178032. Its totient is φ = 3153432.

The previous prime is 3165713. The next prime is 3165739. The reversal of 3165731 is 1375613.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1375613 = 43 ⋅31991.

It is a cyclic number.

It is not a de Polignac number, because 3165731 - 2⁶ = 3165667 is a prime.

It is a super-2 number, since 2×3165731² = 20043705528722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3165731.

It is not an unprimeable number, because it can be changed into a prime (3165739) 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, 5756 + ... + 6281.

It is an arithmetic number, because the mean of its divisors is an integer number (794508).

Almost surely, 2^3165731 is an apocalyptic number.

3165731 is a deficient number, since it is larger than the sum of its proper divisors (12301).

3165731 is a wasteful number, since it uses less digits than its factorization.

3165731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12300.

The product of its digits is 1890, while the sum is 26.

The square root of 3165731 is about 1779.2501229451. The cubic root of 3165731 is about 146.8333372701.

The spelling of 3165731 in words is "three million, one hundred sixty-five thousand, seven hundred thirty-one".