2311113204405 has 24 divisors (see below), whose sum is σ = 4006095495480. Its totient is φ = 1232542650240.

The previous prime is 2311113204397. The next prime is 2311113204457. The reversal of 2311113204405 is 5044023111132.

2311113204405 is a `hidden beast` number, since 2 + 31 + 11 + 13 + 204 + 405 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 215631138321 + 2095482066084 = 464361^2 + 1447578^2 .

It is not a de Polignac number, because 2311113204405 - 2³ = 2311113204397 is a prime.

It is a super-2 number, since 2×2311113204405² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47431 + ... + 2150459.

It is an arithmetic number, because the mean of its divisors is an integer number (166920645645).

Almost surely, 2^{2311113204405} is an apocalyptic number.

It is an amenable number.

2311113204405 is a deficient number, since it is larger than the sum of its proper divisors (1694982291075).

2311113204405 is a wasteful number, since it uses less digits than its factorization.

2311113204405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127461 (or 2127458 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 2311113204405 its reverse (5044023111132), we get a palindrome (7355136315537).

The spelling of 2311113204405 in words is "two trillion, three hundred eleven billion, one hundred thirteen million, two hundred four thousand, four hundred five".