138692312 has 16 divisors (see below), whose sum is σ = 283689000. Its totient is φ = 63041920.

The previous prime is 138692293. The next prime is 138692371. The reversal of 138692312 is 213296831.

It is a super-3 number, since 3×138692312³ (a number of 25 digits) contains 333 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, 787937 + ... + 788112.

Almost surely, 2^138692312 is an apocalyptic number.

It is an amenable number.

138692312 is an abundant number, since it is smaller than the sum of its proper divisors (144996688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138692312 is a wasteful number, since it uses less digits than its factorization.

138692312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576066 (or 1576062 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 138692312 is about 11776.7700155858. The cubic root of 138692312 is about 517.6276449270.

The spelling of 138692312 in words is "one hundred thirty-eight million, six hundred ninety-two thousand, three hundred twelve".