138315671 has 16 divisors (see below), whose sum is σ = 151939200. Its totient is φ = 125139168.

The previous prime is 138315643. The next prime is 138315677. The reversal of 138315671 is 176513831.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138315671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138315677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329900 + ... + 330318.

It is an arithmetic number, because the mean of its divisors is an integer number (9496200).

Almost surely, 2^138315671 is an apocalyptic number.

138315671 is a deficient number, since it is larger than the sum of its proper divisors (13623529).

138315671 is a wasteful number, since it uses less digits than its factorization.

138315671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878.

The product of its digits is 15120, while the sum is 35.

The square root of 138315671 is about 11760.7682997328. The cubic root of 138315671 is about 517.1586534374.

The spelling of 138315671 in words is "one hundred thirty-eight million, three hundred fifteen thousand, six hundred seventy-one".