138707023 has 8 divisors (see below), whose sum is σ = 170716448. Its totient is φ = 109746144.

The previous prime is 138707021. The next prime is 138707047. The reversal of 138707023 is 320707831.

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

It is a cyclic number.

It is not a de Polignac number, because 138707023 - 2¹ = 138707021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138707021) 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, 762036 + ... + 762217.

It is an arithmetic number, because the mean of its divisors is an integer number (21339556).

Almost surely, 2^138707023 is an apocalyptic number.

138707023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

138707023 is a deficient number, since it is larger than the sum of its proper divisors (32009425).

138707023 is a wasteful number, since it uses less digits than its factorization.

138707023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524273.

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

The square root of 138707023 is about 11777.3945760512. The cubic root of 138707023 is about 517.6459457517.

The spelling of 138707023 in words is "one hundred thirty-eight million, seven hundred seven thousand, twenty-three".