137318 has 4 divisors (see below), whose sum is σ = 205980. Its totient is φ = 68658.

The previous prime is 137303. The next prime is 137321. The reversal of 137318 is 813731.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 137293 and 137302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34328 + ... + 34331.

It is an arithmetic number, because the mean of its divisors is an integer number (51495).

2¹³⁷³¹⁸ is an apocalyptic number.

137318 is a deficient number, since it is larger than the sum of its proper divisors (68662).

137318 is an equidigital number, since it uses as much as digits as its factorization.

137318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68661.

The product of its digits is 504, while the sum is 23.

The square root of 137318 is about 370.5644343431. The cubic root of 137318 is about 51.5912229928.

The spelling of 137318 in words is "one hundred thirty-seven thousand, three hundred eighteen".