308732113 has 2 divisors, whose sum is σ = 308732114. Its totient is φ = 308732112.

The previous prime is 308732101. The next prime is 308732117. The reversal of 308732113 is 311237803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193126609 + 115605504 = 13897^2 + 10752^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-308732113 is a prime.

It is not a weakly prime, because it can be changed into another prime (308732117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154366056 + 154366057.

It is an arithmetic number, because the mean of its divisors is an integer number (154366057).

Almost surely, 2^308732113 is an apocalyptic number.

It is an amenable number.

308732113 is a deficient number, since it is larger than the sum of its proper divisors (1).

308732113 is an equidigital number, since it uses as much as digits as its factorization.

308732113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 308732113 is about 17570.7743995534. The cubic root of 308732113 is about 675.8660036046.

Adding to 308732113 its reverse (311237803), we get a palindrome (619969916).

The spelling of 308732113 in words is "three hundred eight million, seven hundred thirty-two thousand, one hundred thirteen".