281327379361 has 12 divisors (see below), whose sum is σ = 327273941700. Its totient is φ = 241126287360.

The previous prime is 281327379329. The next prime is 281327379373. The reversal of 281327379361 is 163973723182.

It can be written as a sum of positive squares in 2 ways, for example, as 255372558336 + 25954821025 = 505344^2 + 161105^2 .

It is not a de Polignac number, because 281327379361 - 2⁵ = 281327379329 is a prime.

It is a super-3 number, since 3×281327379361³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 281327379299 and 281327379308.

It is not an unprimeable number, because it can be changed into a prime (281327379391) 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, 1000065 + ... + 1250113.

It is an arithmetic number, because the mean of its divisors is an integer number (27272828475).

Almost surely, 2^281327379361 is an apocalyptic number.

It is an amenable number.

281327379361 is a deficient number, since it is larger than the sum of its proper divisors (45946562339).

281327379361 is a wasteful number, since it uses less digits than its factorization.

281327379361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273024 (or 273017 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 52.

The spelling of 281327379361 in words is "two hundred eighty-one billion, three hundred twenty-seven million, three hundred seventy-nine thousand, three hundred sixty-one".