2291311 has 8 divisors (see below), whose sum is σ = 2646864. Its totient is φ = 1960320.

The previous prime is 2291287. The next prime is 2291327. The reversal of 2291311 is 1131922.

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 2291311 - 2⁷ = 2291183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291351) 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, 5940 + ... + 6313.

It is an arithmetic number, because the mean of its divisors is an integer number (330858).

2^2291311 is an apocalyptic number.

2291311 is a deficient number, since it is larger than the sum of its proper divisors (355553).

2291311 is a wasteful number, since it uses less digits than its factorization.

2291311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12281.

The product of its digits is 108, while the sum is 19.

The square root of 2291311 is about 1513.7076996567. The cubic root of 2291311 is about 131.8341772972.

It can be divided in two parts, 229 and 1311, that added together give a triangular number (1540 = T₅₅).

The spelling of 2291311 in words is "two million, two hundred ninety-one thousand, three hundred eleven".