1313515141 has 2 divisors, whose sum is σ = 1313515142. Its totient is φ = 1313515140.

The previous prime is 1313515117. The next prime is 1313515187. The reversal of 1313515141 is 1415153131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1297080225 + 16434916 = 36015^2 + 4054^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313515141 - 2¹¹ = 1313513093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313515741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656757570 + 656757571.

It is an arithmetic number, because the mean of its divisors is an integer number (656757571).

Almost surely, 2^1313515141 is an apocalyptic number.

It is an amenable number.

1313515141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313515141 is an equidigital number, since it uses as much as digits as its factorization.

1313515141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 900, while the sum is 25.

The square root of 1313515141 is about 36242.4494343305. The cubic root of 1313515141 is about 1095.1619871140.

Adding to 1313515141 its reverse (1415153131), we get a palindrome (2728668272).

The spelling of 1313515141 in words is "one billion, three hundred thirteen million, five hundred fifteen thousand, one hundred forty-one".