86918313 has 8 divisors (see below), whose sum is σ = 115940800. Its totient is φ = 57920688.

The previous prime is 86918309. The next prime is 86918317. The reversal of 86918313 is 31381968.

It is an interprime number because it is at equal distance from previous prime (86918309) and next prime (86918317).

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

It is not a de Polignac number, because 86918313 - 2² = 86918309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86918317) 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, 4668 + ... + 13986.

It is an arithmetic number, because the mean of its divisors is an integer number (14492600).

Almost surely, 2^86918313 is an apocalyptic number.

It is an amenable number.

86918313 is a deficient number, since it is larger than the sum of its proper divisors (29022487).

86918313 is a wasteful number, since it uses less digits than its factorization.

86918313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12431.

The product of its digits is 31104, while the sum is 39.

The square root of 86918313 is about 9322.9991419071. Note that the first 3 decimals coincide. The cubic root of 86918313 is about 442.9660371383.

The spelling of 86918313 in words is "eighty-six million, nine hundred eighteen thousand, three hundred thirteen".