138312262 has 16 divisors (see below), whose sum is σ = 226573200. Its totient is φ = 62801440.

The previous prime is 138312259. The next prime is 138312263. The reversal of 138312262 is 262213831.

138312262 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 138312262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138312263) 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, 21564 + ... + 27232.

It is an arithmetic number, because the mean of its divisors is an integer number (14160825).

Almost surely, 2^138312262 is an apocalyptic number.

138312262 is a deficient number, since it is larger than the sum of its proper divisors (88260938).

138312262 is a wasteful number, since it uses less digits than its factorization.

138312262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6791.

The product of its digits is 3456, while the sum is 28.

The square root of 138312262 is about 11760.6233678322. The cubic root of 138312262 is about 517.1544046821.

The spelling of 138312262 in words is "one hundred thirty-eight million, three hundred twelve thousand, two hundred sixty-two".