2311657 has 2 divisors, whose sum is σ = 2311658. Its totient is φ = 2311656.

The previous prime is 2311651. The next prime is 2311667. The reversal of 2311657 is 7561132.

2311657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1907161 + 404496 = 1381^2 + 636^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311657 - 2¹¹ = 2309609 is a prime.

It is not a weakly prime, because it can be changed into another prime (2311651) 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 as a sum of consecutive naturals, namely, 1155828 + 1155829.

It is an arithmetic number, because the mean of its divisors is an integer number (1155829).

2^2311657 is an apocalyptic number.

It is an amenable number.

2311657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311657 is an equidigital number, since it uses as much as digits as its factorization.

2311657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 25.

The square root of 2311657 is about 1520.4134306168. The cubic root of 2311657 is about 132.2232410010.

Adding to 2311657 its reverse (7561132), we get a palindrome (9872789).

The spelling of 2311657 in words is "two million, three hundred eleven thousand, six hundred fifty-seven".