2111311401305 has 8 divisors (see below), whose sum is σ = 2533585428744. Its totient is φ = 1689041289600.

The previous prime is 2111311401299. The next prime is 2111311401317. The reversal of 2111311401305 is 5031041131112.

It can be written as a sum of positive squares in 4 ways, for example, as 56569768336 + 2054741632969 = 237844^2 + 1433437^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2111311401305 - 2²⁰ = 2111310352729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378365 + ... + 2089445.

It is an arithmetic number, because the mean of its divisors is an integer number (316698178593).

Almost surely, 2^{2111311401305} is an apocalyptic number.

It is an amenable number.

2111311401305 is a deficient number, since it is larger than the sum of its proper divisors (422274027439).

2111311401305 is a wasteful number, since it uses less digits than its factorization.

2111311401305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957867.

The product of its (nonzero) digits is 360, while the sum is 23.

Adding to 2111311401305 its reverse (5031041131112), we get a palindrome (7142352532417).

The spelling of 2111311401305 in words is "two trillion, one hundred eleven billion, three hundred eleven million, four hundred one thousand, three hundred five".