7157187313 has 2 divisors, whose sum is σ = 7157187314. Its totient is φ = 7157187312.

The previous prime is 7157187283. The next prime is 7157187319. The reversal of 7157187313 is 3137817517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4056033969 + 3101153344 = 63687^2 + 55688^2 .

It is a cyclic number.

It is not a de Polignac number, because 7157187313 - 2⁹ = 7157186801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7157187313.

It is not a weakly prime, because it can be changed into another prime (7157187319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3578593656 + 3578593657.

It is an arithmetic number, because the mean of its divisors is an integer number (3578593657).

Almost surely, 2^7157187313 is an apocalyptic number.

It is an amenable number.

7157187313 is a deficient number, since it is larger than the sum of its proper divisors (1).

7157187313 is an equidigital number, since it uses as much as digits as its factorization.

7157187313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 123480, while the sum is 43.

The square root of 7157187313 is about 84600.1614241959. The cubic root of 7157187313 is about 1927.1438251600.

The spelling of 7157187313 in words is "seven billion, one hundred fifty-seven million, one hundred eighty-seven thousand, three hundred thirteen".