3161216266 has 16 divisors (see below), whose sum is σ = 5406967944. Its totient is φ = 1373197824.

The previous prime is 3161216263. The next prime is 3161216293. The reversal of 3161216266 is 6626121613.

It can be written as a sum of positive squares in 4 ways, for example, as 2640418225 + 520798041 = 51385^2 + 22821^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (3161216263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3575595 + ... + 3576478.

Almost surely, 2^3161216266 is an apocalyptic number.

3161216266 is a deficient number, since it is larger than the sum of its proper divisors (2245751678).

3161216266 is a wasteful number, since it uses less digits than its factorization.

3161216266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7152105.

The product of its digits is 15552, while the sum is 34.

The square root of 3161216266 is about 56224.6944500368. The cubic root of 3161216266 is about 1467.6350307351.

Adding to 3161216266 its reverse (6626121613), we get a palindrome (9787337879).

The spelling of 3161216266 in words is "three billion, one hundred sixty-one million, two hundred sixteen thousand, two hundred sixty-six".