138674311 has 4 divisors (see below), whose sum is σ = 138711400. Its totient is φ = 138637224.

The previous prime is 138674303. The next prime is 138674329. The reversal of 138674311 is 113476831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113476831 = 13 ⋅8728987.

It is a cyclic number.

It is not a de Polignac number, because 138674311 - 2³ = 138674303 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 (138674351) by changing a digit.

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, 12216 + ... + 20653.

It is an arithmetic number, because the mean of its divisors is an integer number (34677850).

Almost surely, 2^138674311 is an apocalyptic number.

138674311 is a deficient number, since it is larger than the sum of its proper divisors (37089).

138674311 is an equidigital number, since it uses as much as digits as its factorization.

138674311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37088.

The product of its digits is 12096, while the sum is 34.

The square root of 138674311 is about 11776.0057319959. The cubic root of 138674311 is about 517.6052495054.

The spelling of 138674311 in words is "one hundred thirty-eight million, six hundred seventy-four thousand, three hundred eleven".