3164721361 has 2 divisors, whose sum is σ = 3164721362. Its totient is φ = 3164721360.

The previous prime is 3164721347. The next prime is 3164721379. The reversal of 3164721361 is 1631274613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2471978961 + 692742400 = 49719^2 + 26320^2 .

It is a cyclic number.

It is not a de Polignac number, because 3164721361 - 2⁷ = 3164721233 is a prime.

It is a super-2 number, since 2×3164721361² = 20030922585539384642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3164721311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1582360680 + 1582360681.

It is an arithmetic number, because the mean of its divisors is an integer number (1582360681).

Almost surely, 2^3164721361 is an apocalyptic number.

It is an amenable number.

3164721361 is a deficient number, since it is larger than the sum of its proper divisors (1).

3164721361 is an equidigital number, since it uses as much as digits as its factorization.

3164721361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 3164721361 is about 56255.8562373732. The cubic root of 3164721361 is about 1468.1772587556.

Adding to 3164721361 its reverse (1631274613), we get a palindrome (4795995974).

The spelling of 3164721361 in words is "three billion, one hundred sixty-four million, seven hundred twenty-one thousand, three hundred sixty-one".