1315111673 has 2 divisors, whose sum is σ = 1315111674. Its totient is φ = 1315111672.

The previous prime is 1315111669. The next prime is 1315111769. The reversal of 1315111673 is 3761115131.

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., 901680784 + 413430889 = 30028^2 + 20333^2 .

It is an emirp because it is prime and its reverse (3761115131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1315111673 - 2² = 1315111669 is a prime.

It is not a weakly prime, because it can be changed into another prime (1315111643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657555836 + 657555837.

It is an arithmetic number, because the mean of its divisors is an integer number (657555837).

Almost surely, 2^1315111673 is an apocalyptic number.

It is an amenable number.

1315111673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315111673 is an equidigital number, since it uses as much as digits as its factorization.

1315111673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890, while the sum is 29.

The square root of 1315111673 is about 36264.4684643247. The cubic root of 1315111673 is about 1095.6055179073.

The spelling of 1315111673 in words is "one billion, three hundred fifteen million, one hundred eleven thousand, six hundred seventy-three".