139317318 has 24 divisors (see below), whose sum is σ = 344976528. Its totient is φ = 39804912.

The previous prime is 139317301. The next prime is 139317319. The reversal of 139317318 is 813713931.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139317319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 552721 + ... + 552972.

It is an arithmetic number, because the mean of its divisors is an integer number (14374022).

Almost surely, 2^139317318 is an apocalyptic number.

139317318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

139317318 is an abundant number, since it is smaller than the sum of its proper divisors (205659210).

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

139317318 is a wasteful number, since it uses less digits than its factorization.

139317318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105708 (or 1105705 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 139317318 is about 11803.2757317619. The cubic root of 139317318 is about 518.4040292825.

The spelling of 139317318 in words is "one hundred thirty-nine million, three hundred seventeen thousand, three hundred eighteen".