2311144261 has 2 divisors, whose sum is σ = 2311144262. Its totient is φ = 2311144260.

The previous prime is 2311144201. The next prime is 2311144267. The reversal of 2311144261 is 1624411132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1680180100 + 630964161 = 40990^2 + 25119^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311144261 - 2²¹ = 2309047109 is a prime.

It is a super-2 number, since 2×2311144261² = 10682775590306472242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2311144267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155572130 + 1155572131.

It is an arithmetic number, because the mean of its divisors is an integer number (1155572131).

Almost surely, 2^2311144261 is an apocalyptic number.

It is an amenable number.

2311144261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311144261 is an equidigital number, since it uses as much as digits as its factorization.

2311144261 is an evil number, because the sum of its binary digits is even.

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

The square root of 2311144261 is about 48074.3617846353. The cubic root of 2311144261 is about 1322.1346431618.

Adding to 2311144261 its reverse (1624411132), we get a palindrome (3935555393).

The spelling of 2311144261 in words is "two billion, three hundred eleven million, one hundred forty-four thousand, two hundred sixty-one".