313121113240 has 32 divisors (see below), whose sum is σ = 758716544880. Its totient is φ = 115613949312.

The previous prime is 313121113231. The next prime is 313121113247. The reversal of 313121113240 is 42311121313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313121113247) 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 7 ways as a sum of consecutive naturals, for example, 301077474 + ... + 301078513.

Almost surely, 2^313121113240 is an apocalyptic number.

It is an amenable number.

313121113240 is an abundant number, since it is smaller than the sum of its proper divisors (445595431640).

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

313121113240 is a wasteful number, since it uses less digits than its factorization.

313121113240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602156011 (or 602156007 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 313121113240 its reverse (42311121313), we get a palindrome (355432234553).

The spelling of 313121113240 in words is "three hundred thirteen billion, one hundred twenty-one million, one hundred thirteen thousand, two hundred forty".