130306157 has 2 divisors, whose sum is σ = 130306158. Its totient is φ = 130306156.

The previous prime is 130306147. The next prime is 130306177. The reversal of 130306157 is 751603031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88755241 + 41550916 = 9421^2 + 6446^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130306157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130306117) 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, 65153078 + 65153079.

It is an arithmetic number, because the mean of its divisors is an integer number (65153079).

Almost surely, 2^130306157 is an apocalyptic number.

It is an amenable number.

130306157 is a deficient number, since it is larger than the sum of its proper divisors (1).

130306157 is an equidigital number, since it uses as much as digits as its factorization.

130306157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 130306157 is about 11415.1722282233. The cubic root of 130306157 is about 506.9770642950.

Adding to 130306157 its reverse (751603031), we get a palindrome (881909188).

The spelling of 130306157 in words is "one hundred thirty million, three hundred six thousand, one hundred fifty-seven".