391542668313 has 8 divisors (see below), whose sum is σ = 523120145376. Its totient is φ = 260496818400.

The previous prime is 391542668281. The next prime is 391542668317. The reversal of 391542668313 is 313866245193.

It is a happy number.

391542668313 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 391542668313 - 2⁵ = 391542668281 is a prime.

It is a super-2 number, since 2×391542668313² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (391542668317) 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, 132905068 + ... + 132908013.

It is an arithmetic number, because the mean of its divisors is an integer number (65390018172).

Almost surely, 2^391542668313 is an apocalyptic number.

It is an amenable number.

391542668313 is a deficient number, since it is larger than the sum of its proper divisors (131577477063).

391542668313 is a wasteful number, since it uses less digits than its factorization.

391542668313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265813575.

The product of its digits is 2799360, while the sum is 51.

The spelling of 391542668313 in words is "three hundred ninety-one billion, five hundred forty-two million, six hundred sixty-eight thousand, three hundred thirteen".