313451135140520 has 64 divisors (see below), whose sum is σ = 760342672656000. Its totient is φ = 115609866893568.

The previous prime is 313451135140489. The next prime is 313451135140571. The reversal of 313451135140520 is 25041531154313.

It is a super-2 number, since 2×313451135140520² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327482210 + ... + 328437969.

It is an arithmetic number, because the mean of its divisors is an integer number (11880354260250).

Almost surely, 2^{313451135140520} is an apocalyptic number.

It is an amenable number.

313451135140520 is an abundant number, since it is smaller than the sum of its proper divisors (446891537515480).

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

313451135140520 is a wasteful number, since it uses less digits than its factorization.

313451135140520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655921122 (or 655921118 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

Adding to 313451135140520 its reverse (25041531154313), we get a palindrome (338492666294833).

The spelling of 313451135140520 in words is "three hundred thirteen trillion, four hundred fifty-one billion, one hundred thirty-five million, one hundred forty thousand, five hundred twenty".