2311115013 has 6 divisors (see below), whose sum is σ = 3338277254. Its totient is φ = 1540743336.

The previous prime is 2311114999. The next prime is 2311115017. The reversal of 2311115013 is 3105111132.

It can be written as a sum of positive squares in only one way, i.e., 2059162884 + 251952129 = 45378^2 + 15873^2 .

It is not a de Polignac number, because 2311115013 - 2⁹ = 2311114501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311115017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128395270 + ... + 128395287.

Almost surely, 2^2311115013 is an apocalyptic number.

It is an amenable number.

2311115013 is a deficient number, since it is larger than the sum of its proper divisors (1027162241).

2311115013 is a wasteful number, since it uses less digits than its factorization.

2311115013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256790563 (or 256790560 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 2311115013 is about 48074.0575882669. The cubic root of 2311115013 is about 1322.1290658441.

Adding to 2311115013 its reverse (3105111132), we get a palindrome (5416226145).

The spelling of 2311115013 in words is "two billion, three hundred eleven million, one hundred fifteen thousand, thirteen".