138753343 has 2 divisors, whose sum is σ = 138753344. Its totient is φ = 138753342.

The previous prime is 138753281. The next prime is 138753361. The reversal of 138753343 is 343357831.

138753343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (343357831) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138753343 is a prime.

It is a super-3 number, since 3×138753343³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138753743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69376671 + 69376672.

It is an arithmetic number, because the mean of its divisors is an integer number (69376672).

Almost surely, 2^138753343 is an apocalyptic number.

138753343 is a deficient number, since it is larger than the sum of its proper divisors (1).

138753343 is an equidigital number, since it uses as much as digits as its factorization.

138753343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 37.

The square root of 138753343 is about 11779.3608909822. The cubic root of 138753343 is about 517.7035604544.

The spelling of 138753343 in words is "one hundred thirty-eight million, seven hundred fifty-three thousand, three hundred forty-three".