138250311 has 8 divisors (see below), whose sum is σ = 184986240. Its totient is φ = 91840632.

The previous prime is 138250303. The next prime is 138250331. The reversal of 138250311 is 113052831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138250311 - 2³ = 138250303 is a prime.

It is a super-2 number, since 2×138250311² = 38226296983193442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138250331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80571 + ... + 82268.

It is an arithmetic number, because the mean of its divisors is an integer number (23123280).

Almost surely, 2^138250311 is an apocalyptic number.

138250311 is a deficient number, since it is larger than the sum of its proper divisors (46735929).

138250311 is a wasteful number, since it uses less digits than its factorization.

138250311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163125.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 138250311 is about 11757.9892413627. The cubic root of 138250311 is about 517.0771808298.

The spelling of 138250311 in words is "one hundred thirty-eight million, two hundred fifty thousand, three hundred eleven".