2311913 has 8 divisors (see below), whose sum is σ = 2378376. Its totient is φ = 2246400.

The previous prime is 2311889. The next prime is 2311921. The reversal of 2311913 is 3191132.

2311913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 200704 + 2111209 = 448^2 + 1453^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2311913 - 2⁶ = 2311849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2311993) 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 7 ways as a sum of consecutive naturals, for example, 9473 + ... + 9713.

It is an arithmetic number, because the mean of its divisors is an integer number (297297).

2^2311913 is an apocalyptic number.

It is an amenable number.

2311913 is a deficient number, since it is larger than the sum of its proper divisors (66463).

2311913 is a wasteful number, since it uses less digits than its factorization.

2311913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475.

The product of its digits is 162, while the sum is 20.

The square root of 2311913 is about 1520.4976159139. The cubic root of 2311913 is about 132.2281217568.

It can be divided in two parts, 23119 and 13, that added together give a palindrome (23132).

The spelling of 2311913 in words is "two million, three hundred eleven thousand, nine hundred thirteen".