2231323511 has 2 divisors, whose sum is σ = 2231323512. Its totient is φ = 2231323510.

The previous prime is 2231323483. The next prime is 2231323529. The reversal of 2231323511 is 1153231322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2231323511 - 2¹⁸ = 2231061367 is a prime.

It is a super-3 number, since 3×2231323511³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231323571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115661755 + 1115661756.

It is an arithmetic number, because the mean of its divisors is an integer number (1115661756).

Almost surely, 2^2231323511 is an apocalyptic number.

2231323511 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231323511 is an equidigital number, since it uses as much as digits as its factorization.

2231323511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 2231323511 is about 47236.8871857577. The cubic root of 2231323511 is about 1306.7349708397.

Adding to 2231323511 its reverse (1153231322), we get a palindrome (3384554833).

The spelling of 2231323511 in words is "two billion, two hundred thirty-one million, three hundred twenty-three thousand, five hundred eleven".