138353 has 4 divisors (see below), whose sum is σ = 142848. Its totient is φ = 133860.

The previous prime is 138349. The next prime is 138371. The reversal of 138353 is 353831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138353 - 2² = 138349 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (138323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2201 + ... + 2262.

It is an arithmetic number, because the mean of its divisors is an integer number (35712).

2¹³⁸³⁵³ is an apocalyptic number.

It is an amenable number.

138353 is a deficient number, since it is larger than the sum of its proper divisors (4495).

138353 is an equidigital number, since it uses as much as digits as its factorization.

138353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4494.

The product of its digits is 1080, while the sum is 23.

The square root of 138353 is about 371.9583309996. The cubic root of 138353 is about 51.7205173302.

The spelling of 138353 in words is "one hundred thirty-eight thousand, three hundred fifty-three".