2311864 has 32 divisors (see below), whose sum is σ = 4665600. Its totient is φ = 1070080.

The previous prime is 2311861. The next prime is 2311873. The reversal of 2311864 is 4681132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12009 + ... + 12199.

It is an arithmetic number, because the mean of its divisors is an integer number (145800).

2^2311864 is an apocalyptic number.

It is an amenable number.

2311864 is an abundant number, since it is smaller than the sum of its proper divisors (2353736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2311864 is a wasteful number, since it uses less digits than its factorization.

2311864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 299 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 2311864 is about 1520.4815026826. The cubic root of 2311864 is about 132.2271875775.

Adding to 2311864 its reverse (4681132), we get a palindrome (6992996).

The spelling of 2311864 in words is "two million, three hundred eleven thousand, eight hundred sixty-four".