316318728604781 has 8 divisors (see below), whose sum is σ = 361507242487104. Its totient is φ = 271130245742880.

The previous prime is 316318728604717. The next prime is 316318728604789. The reversal of 316318728604781 is 187406827813613.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 316318728604781 - 2⁶ = 316318728604717 is a prime.

It is a super-2 number, since 2×316318728604781² (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 (316318728604789) 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, 21406121 + ... + 33028161.

It is an arithmetic number, because the mean of its divisors is an integer number (45188405310888).

Almost surely, 2^{316318728604781} is an apocalyptic number.

It is an amenable number.

316318728604781 is a deficient number, since it is larger than the sum of its proper divisors (45188513882323).

316318728604781 is a wasteful number, since it uses less digits than its factorization.

316318728604781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15510211.

The product of its (nonzero) digits is 65028096, while the sum is 65.

The spelling of 316318728604781 in words is "three hundred sixteen trillion, three hundred eighteen billion, seven hundred twenty-eight million, six hundred four thousand, seven hundred eighty-one".