138392312 has 16 divisors (see below), whose sum is σ = 259610400. Its totient is φ = 69162880.

The previous prime is 138392273. The next prime is 138392323. The reversal of 138392312 is 213293831.

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, 30512 + ... + 34752.

It is an arithmetic number, because the mean of its divisors is an integer number (16225650).

Almost surely, 2^138392312 is an apocalyptic number.

It is an amenable number.

138392312 is a deficient number, since it is larger than the sum of its proper divisors (121218088).

138392312 is a wasteful number, since it uses less digits than its factorization.

138392312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8326 (or 8322 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 138392312 is about 11764.0261815418. The cubic root of 138392312 is about 517.2541553610.

The spelling of 138392312 in words is "one hundred thirty-eight million, three hundred ninety-two thousand, three hundred twelve".