138031319 has 2 divisors, whose sum is σ = 138031320. Its totient is φ = 138031318.

The previous prime is 138031277. The next prime is 138031351. The reversal of 138031319 is 913130831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138031319 - 2²⁰ = 136982743 is a prime.

It is a super-2 number, since 2×138031319² = 38105290049759522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 138031291 and 138031300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138036319) 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 as a sum of consecutive naturals, namely, 69015659 + 69015660.

It is an arithmetic number, because the mean of its divisors is an integer number (69015660).

Almost surely, 2^138031319 is an apocalyptic number.

138031319 is a deficient number, since it is larger than the sum of its proper divisors (1).

138031319 is an equidigital number, since it uses as much as digits as its factorization.

138031319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 138031319 is about 11748.6730740114. The cubic root of 138031319 is about 516.8040154211.

The spelling of 138031319 in words is "one hundred thirty-eight million, thirty-one thousand, three hundred nineteen".