3181979 has 4 divisors (see below), whose sum is σ = 3212976. Its totient is φ = 3150984.

The previous prime is 3181973. The next prime is 3181999. The reversal of 3181979 is 9791813.

3181979 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.

It is a cyclic number.

It is not a de Polignac number, because 3181979 - 2²⁰ = 2133403 is a prime.

It is a super-3 number, since 3×3181979³ = 96652520068193330217, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3181973) 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, 15344 + ... + 15549.

It is an arithmetic number, because the mean of its divisors is an integer number (803244).

Almost surely, 2^3181979 is an apocalyptic number.

3181979 is a deficient number, since it is larger than the sum of its proper divisors (30997).

3181979 is a wasteful number, since it uses less digits than its factorization.

3181979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30996.

The product of its digits is 13608, while the sum is 38.

The square root of 3181979 is about 1783.8102477562. The cubic root of 3181979 is about 147.0841143232.

The spelling of 3181979 in words is "three million, one hundred eighty-one thousand, nine hundred seventy-nine".