138310 has 8 divisors (see below), whose sum is σ = 248976. Its totient is φ = 55320.

The previous prime is 138289. The next prime is 138311. The reversal of 138310 is 13831.

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

It is a super-2 number, since 2×138310² = 38259312200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138311) by changing a digit.

138310 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 3 ways as a sum of consecutive naturals, for example, 6906 + ... + 6925.

It is an arithmetic number, because the mean of its divisors is an integer number (31122).

2¹³⁸³¹⁰ is an apocalyptic number.

138310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138310 is a deficient number, since it is larger than the sum of its proper divisors (110666).

138310 is a wasteful number, since it uses less digits than its factorization.

138310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13838.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 138310 is about 371.9005243341. The cubic root of 138310 is about 51.7151585434.

The spelling of 138310 in words is "one hundred thirty-eight thousand, three hundred ten".