3191348161 has 4 divisors (see below), whose sum is σ = 3277600852. Its totient is φ = 3105095472.

The previous prime is 3191348159. The next prime is 3191348177. The reversal of 3191348161 is 1618431913.

It is a happy number.

3191348161 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 can be written as a sum of positive squares in 2 ways, for example, as 2170162225 + 1021185936 = 46585^2 + 31956^2 .

It is a cyclic number.

It is not a de Polignac number, because 3191348161 - 2¹ = 3191348159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 86252653 = 3191348161 / (3 + 1 + 9 + 1 + 3 + 4 + 8 + 1 + 6 + 1).

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 3191348161.

It is not an unprimeable number, because it can be changed into a prime (3191348101) 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, 43126290 + ... + 43126363.

It is an arithmetic number, because the mean of its divisors is an integer number (819400213).

Almost surely, 2^3191348161 is an apocalyptic number.

It is an amenable number.

3191348161 is a deficient number, since it is larger than the sum of its proper divisors (86252691).

3191348161 is an equidigital number, since it uses as much as digits as its factorization.

3191348161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86252690.

The product of its digits is 15552, while the sum is 37.

The square root of 3191348161 is about 56492.0185601471. The cubic root of 3191348161 is about 1472.2833321140.

The spelling of 3191348161 in words is "three billion, one hundred ninety-one million, three hundred forty-eight thousand, one hundred sixty-one".