302138497 has 2 divisors, whose sum is σ = 302138498. Its totient is φ = 302138496.

The previous prime is 302138491. The next prime is 302138503. The reversal of 302138497 is 794831203.

It is a balanced prime because it is at equal distance from previous prime (302138491) and next prime (302138503).

It can be written as a sum of positive squares in only one way, i.e., 211964481 + 90174016 = 14559^2 + 9496^2 .

It is a cyclic number.

It is not a de Polignac number, because 302138497 - 2¹¹ = 302136449 is a prime.

It is not a weakly prime, because it can be changed into another prime (302138491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151069248 + 151069249.

It is an arithmetic number, because the mean of its divisors is an integer number (151069249).

Almost surely, 2^302138497 is an apocalyptic number.

It is an amenable number.

302138497 is a deficient number, since it is larger than the sum of its proper divisors (1).

302138497 is an equidigital number, since it uses as much as digits as its factorization.

302138497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 302138497 is about 17382.1315436284. The cubic root of 302138497 is about 671.0198302749.

The spelling of 302138497 in words is "three hundred two million, one hundred thirty-eight thousand, four hundred ninety-seven".