313320440245 has 4 divisors (see below), whose sum is σ = 375984528300. Its totient is φ = 250656352192.

The previous prime is 313320440243. The next prime is 313320440263. The reversal of 313320440245 is 542044023313.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 53619107364 + 259701332881 = 231558^2 + 509609^2 .

It is a cyclic number.

It is not a de Polignac number, because 313320440245 - 2¹ = 313320440243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313320440243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31332044020 + ... + 31332044029.

It is an arithmetic number, because the mean of its divisors is an integer number (93996132075).

Almost surely, 2^313320440245 is an apocalyptic number.

It is an amenable number.

313320440245 is a deficient number, since it is larger than the sum of its proper divisors (62664088055).

313320440245 is an equidigital number, since it uses as much as digits as its factorization.

313320440245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62664088054.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 313320440245 its reverse (542044023313), we get a palindrome (855364463558).

The spelling of 313320440245 in words is "three hundred thirteen billion, three hundred twenty million, four hundred forty thousand, two hundred forty-five".