2312261 has 6 divisors (see below), whose sum is σ = 2689830. Its totient is φ = 1981896.

The previous prime is 2312249. The next prime is 2312267. The reversal of 2312261 is 1622132.

It can be written as a sum of positive squares in only one way, i.e., 2307361 + 4900 = 1519^2 + 70^2 .

It is not a de Polignac number, because 2312261 - 2¹⁰ = 2311237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23546 + ... + 23643.

It is an arithmetic number, because the mean of its divisors is an integer number (448305).

2^2312261 is an apocalyptic number.

It is an amenable number.

2312261 is a deficient number, since it is larger than the sum of its proper divisors (377569).

2312261 is an equidigital number, since it uses as much as digits as its factorization.

2312261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47203 (or 47196 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 2312261 is about 1520.6120478281. The cubic root of 2312261 is about 132.2347559565.

Adding to 2312261 its reverse (1622132), we get a palindrome (3934393).

The spelling of 2312261 in words is "two million, three hundred twelve thousand, two hundred sixty-one".