3191274139 has 4 divisors (see below), whose sum is σ = 3191427424. Its totient is φ = 3191120856.

The previous prime is 3191274091. The next prime is 3191274167. The reversal of 3191274139 is 9314721913.

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 3191274139 - 2⁹ = 3191273627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3191274439) 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, 39372 + ... + 89065.

It is an arithmetic number, because the mean of its divisors is an integer number (797856856).

Almost surely, 2^3191274139 is an apocalyptic number.

3191274139 is a deficient number, since it is larger than the sum of its proper divisors (153285).

3191274139 is a wasteful number, since it uses less digits than its factorization.

3191274139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153284.

The product of its digits is 40824, while the sum is 40.

The square root of 3191274139 is about 56491.3634018511. The cubic root of 3191274139 is about 1472.2719490251.

The spelling of 3191274139 in words is "three billion, one hundred ninety-one million, two hundred seventy-four thousand, one hundred thirty-nine".