361311121 has 4 divisors (see below), whose sum is σ = 361361700. Its totient is φ = 361260544.

The previous prime is 361311109. The next prime is 361311127. The reversal of 361311121 is 121113163.

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 113720896 + 247590225 = 10664^2 + 15735^2 .

It is a cyclic number.

It is not a de Polignac number, because 361311121 - 2⁵ = 361311089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361311127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12376 + ... + 29593.

It is an arithmetic number, because the mean of its divisors is an integer number (90340425).

Almost surely, 2^361311121 is an apocalyptic number.

It is an amenable number.

361311121 is a deficient number, since it is larger than the sum of its proper divisors (50579).

361311121 is an equidigital number, since it uses as much as digits as its factorization.

361311121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50578.

The product of its digits is 108, while the sum is 19.

The square root of 361311121 is about 19008.1856314589. The cubic root of 361311121 is about 712.2412289386.

Adding to 361311121 its reverse (121113163), we get a palindrome (482424284).

The spelling of 361311121 in words is "three hundred sixty-one million, three hundred eleven thousand, one hundred twenty-one".