2231320313 has 4 divisors (see below), whose sum is σ = 2231688528. Its totient is φ = 2230952100.

The previous prime is 2231320283. The next prime is 2231320339. The reversal of 2231320313 is 3130231322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2231320313 is a prime.

It is a super-3 number, since 3×2231320313³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2231320213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174863 + ... + 187188.

It is an arithmetic number, because the mean of its divisors is an integer number (557922132).

Almost surely, 2^2231320313 is an apocalyptic number.

It is an amenable number.

2231320313 is a deficient number, since it is larger than the sum of its proper divisors (368215).

2231320313 is an equidigital number, since it uses as much as digits as its factorization.

2231320313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368214.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 2231320313 is about 47236.8533350815. The cubic root of 2231320313 is about 1306.7343465554.

Adding to 2231320313 its reverse (3130231322), we get a palindrome (5361551635).

The spelling of 2231320313 in words is "two billion, two hundred thirty-one million, three hundred twenty thousand, three hundred thirteen".