138700723 has 6 divisors (see below), whose sum is σ = 161345796. Its totient is φ = 118886292.

The previous prime is 138700717. The next prime is 138700729. The reversal of 138700723 is 327007831.

It is an interprime number because it is at equal distance from previous prime (138700717) and next prime (138700729).

It is not a de Polignac number, because 138700723 - 2⁵ = 138700691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138700729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1415265 + ... + 1415362.

It is an arithmetic number, because the mean of its divisors is an integer number (26890966).

Almost surely, 2^138700723 is an apocalyptic number.

138700723 is a deficient number, since it is larger than the sum of its proper divisors (22645073).

138700723 is an equidigital number, since it uses as much as digits as its factorization.

138700723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2830641 (or 2830634 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 138700723 is about 11777.1271114818. The cubic root of 138700723 is about 517.6381085642.

The spelling of 138700723 in words is "one hundred thirty-eight million, seven hundred thousand, seven hundred twenty-three".