5312321181 has 12 divisors (see below), whose sum is σ = 7937951580. Its totient is φ = 3419424960.

The previous prime is 5312321173. The next prime is 5312321191. The reversal of 5312321181 is 1811232135.

It can be written as a sum of positive squares in 2 ways, for example, as 2451141081 + 2861180100 = 49509^2 + 53490^2 .

It is not a de Polignac number, because 5312321181 - 2³ = 5312321173 is a prime.

It is a super-2 number, since 2×5312321181² = 56441512660202469522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5312321141) 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, 10176600 + ... + 10177121.

It is an arithmetic number, because the mean of its divisors is an integer number (661495965).

Almost surely, 2^5312321181 is an apocalyptic number.

It is an amenable number.

5312321181 is a deficient number, since it is larger than the sum of its proper divisors (2625630399).

5312321181 is a wasteful number, since it uses less digits than its factorization.

5312321181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20353756 (or 20353753 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 5312321181 is about 72885.6719870236. The cubic root of 5312321181 is about 1744.8634338928.

The spelling of 5312321181 in words is "five billion, three hundred twelve million, three hundred twenty-one thousand, one hundred eighty-one".