2231240311 has 4 divisors (see below), whose sum is σ = 2231870800. Its totient is φ = 2230609824.

The previous prime is 2231240273. The next prime is 2231240369. The reversal of 2231240311 is 1130421322.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2231240311 - 2⁹ = 2231239799 is a prime.

It is a super-3 number, since 3×2231240311³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231240911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309906 + ... + 317023.

It is an arithmetic number, because the mean of its divisors is an integer number (557967700).

Almost surely, 2^2231240311 is an apocalyptic number.

2231240311 is a deficient number, since it is larger than the sum of its proper divisors (630489).

2231240311 is an equidigital number, since it uses as much as digits as its factorization.

2231240311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630488.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2231240311 is about 47236.0065098649. The cubic root of 2231240311 is about 1306.7187291039.

Adding to 2231240311 its reverse (1130421322), we get a palindrome (3361661633).

The spelling of 2231240311 in words is "two billion, two hundred thirty-one million, two hundred forty thousand, three hundred eleven".