103130257 has 2 divisors, whose sum is σ = 103130258. Its totient is φ = 103130256.

The previous prime is 103130243. The next prime is 103130299. The reversal of 103130257 is 752031301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62157456 + 40972801 = 7884^2 + 6401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103130257 is a prime.

It is not a weakly prime, because it can be changed into another prime (103130207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51565128 + 51565129.

It is an arithmetic number, because the mean of its divisors is an integer number (51565129).

Almost surely, 2^103130257 is an apocalyptic number.

It is an amenable number.

103130257 is a deficient number, since it is larger than the sum of its proper divisors (1).

103130257 is an equidigital number, since it uses as much as digits as its factorization.

103130257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 103130257 is about 10155.3068392836. The cubic root of 103130257 is about 468.9523321605.

Adding to 103130257 its reverse (752031301), we get a palindrome (855161558).

The spelling of 103130257 in words is "one hundred three million, one hundred thirty thousand, two hundred fifty-seven".