139318307 has 2 divisors, whose sum is σ = 139318308. Its totient is φ = 139318306.

The previous prime is 139318301. The next prime is 139318313. The reversal of 139318307 is 703813931.

It is a balanced prime because it is at equal distance from previous prime (139318301) and next prime (139318313).

It is an emirp because it is prime and its reverse (703813931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139318307 - 2⁶ = 139318243 is a prime.

It is a super-3 number, since 3×139318307³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (139318301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69659153 + 69659154.

It is an arithmetic number, because the mean of its divisors is an integer number (69659154).

Almost surely, 2^139318307 is an apocalyptic number.

139318307 is a deficient number, since it is larger than the sum of its proper divisors (1).

139318307 is an equidigital number, since it uses as much as digits as its factorization.

139318307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 139318307 is about 11803.3176268370. The cubic root of 139318307 is about 518.4052559794.

The spelling of 139318307 in words is "one hundred thirty-nine million, three hundred eighteen thousand, three hundred seven".