3161531165 has 12 divisors (see below), whose sum is σ = 4108120884. Its totient is φ = 2334668544.

The previous prime is 3161531161. The next prime is 3161531167. The reversal of 3161531165 is 5611351613.

3161531165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 1087548484 + 2073982681 = 32978^2 + 45541^2 .

It is not a de Polignac number, because 3161531165 - 2² = 3161531161 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 (3161531161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1869884 + ... + 1871573.

It is an arithmetic number, because the mean of its divisors is an integer number (342343407).

Almost surely, 2^3161531165 is an apocalyptic number.

It is an amenable number.

3161531165 is a deficient number, since it is larger than the sum of its proper divisors (946589719).

3161531165 is a wasteful number, since it uses less digits than its factorization.

3161531165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3741488 (or 3741475 counting only the distinct ones).

The product of its digits is 8100, while the sum is 32.

The square root of 3161531165 is about 56227.4947423411. The cubic root of 3161531165 is about 1467.6837610781.

Adding to 3161531165 its reverse (5611351613), we get a palindrome (8772882778).

The spelling of 3161531165 in words is "three billion, one hundred sixty-one million, five hundred thirty-one thousand, one hundred sixty-five".