138527131 has 2 divisors, whose sum is σ = 138527132. Its totient is φ = 138527130.

The previous prime is 138527111. The next prime is 138527159. The reversal of 138527131 is 131725831.

It is a weak prime.

It is an emirp because it is prime and its reverse (131725831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138527131 - 2²³ = 130138523 is a prime.

It is a super-2 number, since 2×138527131² = 38379532046182322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 138527093 and 138527102.

It is not a weakly prime, because it can be changed into another prime (138527111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69263565 + 69263566.

It is an arithmetic number, because the mean of its divisors is an integer number (69263566).

Almost surely, 2^138527131 is an apocalyptic number.

138527131 is a deficient number, since it is larger than the sum of its proper divisors (1).

138527131 is an equidigital number, since it uses as much as digits as its factorization.

138527131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 31.

The square root of 138527131 is about 11769.7549252310. The cubic root of 138527131 is about 517.4220670370.

The spelling of 138527131 in words is "one hundred thirty-eight million, five hundred twenty-seven thousand, one hundred thirty-one".