108731313 has 6 divisors (see below), whose sum is σ = 157056354. Its totient is φ = 72487536.

The previous prime is 108731309. The next prime is 108731321. The reversal of 108731313 is 313137801.

It can be written as a sum of positive squares in only one way, i.e., 79441569 + 29289744 = 8913^2 + 5412^2 .

It is not a de Polignac number, because 108731313 - 2² = 108731309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (108731323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6040620 + ... + 6040637.

It is an arithmetic number, because the mean of its divisors is an integer number (26176059).

Almost surely, 2^108731313 is an apocalyptic number.

It is an amenable number.

108731313 is a deficient number, since it is larger than the sum of its proper divisors (48325041).

108731313 is a wasteful number, since it uses less digits than its factorization.

108731313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12081263 (or 12081260 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 108731313 is about 10427.4307957425. The cubic root of 108731313 is about 477.2927938823.

It can be divided in two parts, 1087 and 31313, that added together give a square (32400 = 180²).

The spelling of 108731313 in words is "one hundred eight million, seven hundred thirty-one thousand, three hundred thirteen".