2731630330405 has 4 divisors (see below), whose sum is σ = 3277956396492. Its totient is φ = 2185304264320.

The previous prime is 2731630330393. The next prime is 2731630330427. The reversal of 2731630330405 is 5040330361372.

It is a happy number.

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 1305989554401 + 1425640776004 = 1142799^2 + 1194002^2 .

It is not a de Polignac number, because 2731630330405 - 2²¹ = 2731628233253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273163033036 + ... + 273163033045.

It is an arithmetic number, because the mean of its divisors is an integer number (819489099123).

Almost surely, 2^{2731630330405} is an apocalyptic number.

It is an amenable number.

2731630330405 is a deficient number, since it is larger than the sum of its proper divisors (546326066087).

2731630330405 is an equidigital number, since it uses as much as digits as its factorization.

2731630330405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546326066086.

The product of its (nonzero) digits is 136080, while the sum is 37.

Adding to 2731630330405 its reverse (5040330361372), we get a palindrome (7771960691777).

The spelling of 2731630330405 in words is "two trillion, seven hundred thirty-one billion, six hundred thirty million, three hundred thirty thousand, four hundred five".