3161120201 has 4 divisors (see below), whose sum is σ = 3163162500. Its totient is φ = 3159077904.

The previous prime is 3161120191. The next prime is 3161120203. The reversal of 3161120201 is 1020211613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1020211613 = 67 ⋅15227039.

It can be written as a sum of positive squares in 2 ways, for example, as 918150601 + 2242969600 = 30301^2 + 47360^2 .

It is a cyclic number.

It is not a de Polignac number, because 3161120201 - 2²⁶ = 3094011337 is a prime.

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 3161120201.

It is not an unprimeable number, because it can be changed into a prime (3161120203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1018826 + ... + 1021923.

It is an arithmetic number, because the mean of its divisors is an integer number (790790625).

Almost surely, 2^3161120201 is an apocalyptic number.

It is an amenable number.

3161120201 is a deficient number, since it is larger than the sum of its proper divisors (2042299).

3161120201 is a wasteful number, since it uses less digits than its factorization.

3161120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042298.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 3161120201 is about 56223.8401481080. The cubic root of 3161120201 is about 1467.6201641167.

Adding to 3161120201 its reverse (1020211613), we get a palindrome (4181331814).

The spelling of 3161120201 in words is "three billion, one hundred sixty-one million, one hundred twenty thousand, two hundred one".