139823023 has 2 divisors, whose sum is σ = 139823024. Its totient is φ = 139823022.

The previous prime is 139823017. The next prime is 139823027. The reversal of 139823023 is 320328931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139823023 - 2⁹ = 139822511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139823027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69911511 + 69911512.

It is an arithmetic number, because the mean of its divisors is an integer number (69911512).

Almost surely, 2^139823023 is an apocalyptic number.

139823023 is a deficient number, since it is larger than the sum of its proper divisors (1).

139823023 is an equidigital number, since it uses as much as digits as its factorization.

139823023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 139823023 is about 11824.6785579989. The cubic root of 139823023 is about 519.0305198225.

The spelling of 139823023 in words is "one hundred thirty-nine million, eight hundred twenty-three thousand, twenty-three".