138331708 has 12 divisors (see below), whose sum is σ = 242331712. Its totient is φ = 69094080.

The previous prime is 138331693. The next prime is 138331717. The reversal of 138331708 is 807133831.

138331708 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×138331708² = 38271322876394528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13485 + ... + 21412.

Almost surely, 2^138331708 is an apocalyptic number.

It is an amenable number.

138331708 is a deficient number, since it is larger than the sum of its proper divisors (104000004).

138331708 is a wasteful number, since it uses less digits than its factorization.

138331708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35892 (or 35890 counting only the distinct ones).

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

The square root of 138331708 is about 11761.4500806661. The cubic root of 138331708 is about 517.1786399720.

The spelling of 138331708 in words is "one hundred thirty-eight million, three hundred thirty-one thousand, seven hundred eight".