138101311 has 4 divisors (see below), whose sum is σ = 142556224. Its totient is φ = 133646400.

The previous prime is 138101297. The next prime is 138101317. The reversal of 138101311 is 113101831.

138101311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 138101311 - 2¹¹ = 138099263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138101317) 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, 2227410 + ... + 2227471.

It is an arithmetic number, because the mean of its divisors is an integer number (35639056).

Almost surely, 2^138101311 is an apocalyptic number.

138101311 is a deficient number, since it is larger than the sum of its proper divisors (4454913).

138101311 is an equidigital number, since it uses as much as digits as its factorization.

138101311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4454912.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 138101311 is about 11751.6514158649. The cubic root of 138101311 is about 516.8913531709.

The spelling of 138101311 in words is "one hundred thirty-eight million, one hundred one thousand, three hundred eleven".