31160713 has 2 divisors, whose sum is σ = 31160714. Its totient is φ = 31160712.

The previous prime is 31160683. The next prime is 31160729. The reversal of 31160713 is 31706113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30338064 + 822649 = 5508^2 + 907^2 .

It is an emirp because it is prime and its reverse (31706113) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31160713 is a prime.

It is not a weakly prime, because it can be changed into another prime (31160743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15580356 + 15580357.

It is an arithmetic number, because the mean of its divisors is an integer number (15580357).

Almost surely, 2^31160713 is an apocalyptic number.

It is an amenable number.

31160713 is a deficient number, since it is larger than the sum of its proper divisors (1).

31160713 is an equidigital number, since it uses as much as digits as its factorization.

31160713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 31160713 is about 5582.1781591060. The cubic root of 31160713 is about 314.6799907927.

Adding to 31160713 its reverse (31706113), we get a palindrome (62866826).

The spelling of 31160713 in words is "thirty-one million, one hundred sixty thousand, seven hundred thirteen".