313103223440 has 40 divisors (see below), whose sum is σ = 831959995200. Its totient is φ = 107349676416.

The previous prime is 313103223359. The next prime is 313103223449. The reversal of 313103223440 is 44322301313.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (313103223449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279555890 + ... + 279557009.

It is an arithmetic number, because the mean of its divisors is an integer number (20798999880).

Almost surely, 2^313103223440 is an apocalyptic number.

It is an amenable number.

313103223440 is an abundant number, since it is smaller than the sum of its proper divisors (518856771760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

313103223440 is a wasteful number, since it uses less digits than its factorization.

313103223440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559112919 (or 559112913 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 313103223440 its reverse (44322301313), we get a palindrome (357425524753).

The spelling of 313103223440 in words is "three hundred thirteen billion, one hundred three million, two hundred twenty-three thousand, four hundred forty".