138430351 has 2 divisors, whose sum is σ = 138430352. Its totient is φ = 138430350.

The previous prime is 138430321. The next prime is 138430379. The reversal of 138430351 is 153034831.

It is an a-pointer prime, because the next prime (138430379) can be obtained adding 138430351 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138430351 - 2¹⁵ = 138397583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138430301) 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, 69215175 + 69215176.

It is an arithmetic number, because the mean of its divisors is an integer number (69215176).

Almost surely, 2^138430351 is an apocalyptic number.

138430351 is a deficient number, since it is larger than the sum of its proper divisors (1).

138430351 is an equidigital number, since it uses as much as digits as its factorization.

138430351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 138430351 is about 11765.6428213676. The cubic root of 138430351 is about 517.3015424547.

The spelling of 138430351 in words is "one hundred thirty-eight million, four hundred thirty thousand, three hundred fifty-one".