3156943 has 4 divisors (see below), whose sum is σ = 3224160. Its totient is φ = 3089728.

The previous prime is 3156941. The next prime is 3156949. The reversal of 3156943 is 3496513.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3156943 - 2¹ = 3156941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3156941) 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, 33538 + ... + 33631.

It is an arithmetic number, because the mean of its divisors is an integer number (806040).

Almost surely, 2^3156943 is an apocalyptic number.

3156943 is a deficient number, since it is larger than the sum of its proper divisors (67217).

3156943 is an equidigital number, since it uses as much as digits as its factorization.

3156943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67216.

The product of its digits is 9720, while the sum is 31.

The square root of 3156943 is about 1776.7788269788. The cubic root of 3156943 is about 146.6973426423.

The spelling of 3156943 in words is "three million, one hundred fifty-six thousand, nine hundred forty-three".