139691303 has 2 divisors, whose sum is σ = 139691304. Its totient is φ = 139691302.

The previous prime is 139691297. The next prime is 139691309. The reversal of 139691303 is 303196931.

It is a balanced prime because it is at equal distance from previous prime (139691297) and next prime (139691309).

It is an emirp because it is prime and its reverse (303196931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139691303 - 2¹⁴ = 139674919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139691309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69845651 + 69845652.

It is an arithmetic number, because the mean of its divisors is an integer number (69845652).

Almost surely, 2^139691303 is an apocalyptic number.

139691303 is a deficient number, since it is larger than the sum of its proper divisors (1).

139691303 is an equidigital number, since it uses as much as digits as its factorization.

139691303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 35.

The square root of 139691303 is about 11819.1075382196. The cubic root of 139691303 is about 518.8674847274.

The spelling of 139691303 in words is "one hundred thirty-nine million, six hundred ninety-one thousand, three hundred three".