138214307 has 12 divisors (see below), whose sum is σ = 173625648. Its totient is φ = 107698800.

The previous prime is 138214249. The next prime is 138214333. The reversal of 138214307 is 703412831.

It is not a de Polignac number, because 138214307 - 2⁶ = 138214243 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 138214307.

It is not an unprimeable number, because it can be changed into a prime (138214387) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80744 + ... + 82437.

It is an arithmetic number, because the mean of its divisors is an integer number (14468804).

Almost surely, 2^138214307 is an apocalyptic number.

138214307 is a deficient number, since it is larger than the sum of its proper divisors (35411341).

138214307 is a wasteful number, since it uses less digits than its factorization.

138214307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163210 (or 163199 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 138214307 is about 11756.4580975734. The cubic root of 138214307 is about 517.0322901214.

The spelling of 138214307 in words is "one hundred thirty-eight million, two hundred fourteen thousand, three hundred seven".