313020143640564 has 12 divisors (see below), whose sum is σ = 730380335161344. Its totient is φ = 104340047880184.

The previous prime is 313020143640563. The next prime is 313020143640571. The reversal of 313020143640564 is 465046341020313.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×313020143640564² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313020143640563) 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, 13042505985012 + ... + 13042505985035.

It is an arithmetic number, because the mean of its divisors is an integer number (60865027930112).

Almost surely, 2^{313020143640564} is an apocalyptic number.

It is an amenable number.

313020143640564 is an abundant number, since it is smaller than the sum of its proper divisors (417360191520780).

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

313020143640564 is a wasteful number, since it uses less digits than its factorization.

313020143640564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26085011970054 (or 26085011970052 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

Adding to 313020143640564 its reverse (465046341020313), we get a palindrome (778066484660877).

The spelling of 313020143640564 in words is "three hundred thirteen trillion, twenty billion, one hundred forty-three million, six hundred forty thousand, five hundred sixty-four".