138150431 has 2 divisors, whose sum is σ = 138150432. Its totient is φ = 138150430.

The previous prime is 138150413. The next prime is 138150457. The reversal of 138150431 is 134051831.

Together with previous prime (138150413) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (138150457) can be obtained adding 138150431 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138150431 - 2⁶ = 138150367 is a prime.

It is a super-2 number, since 2×138150431² = 38171083170971522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138150431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138150401) 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, 69075215 + 69075216.

It is an arithmetic number, because the mean of its divisors is an integer number (69075216).

Almost surely, 2^138150431 is an apocalyptic number.

138150431 is a deficient number, since it is larger than the sum of its proper divisors (1).

138150431 is an equidigital number, since it uses as much as digits as its factorization.

138150431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 138150431 is about 11753.7411490980. The cubic root of 138150431 is about 516.9526287023.

The spelling of 138150431 in words is "one hundred thirty-eight million, one hundred fifty thousand, four hundred thirty-one".