2115011313 has 6 divisors (see below), whose sum is σ = 3055016354. Its totient is φ = 1410007536.

The previous prime is 2115011309. The next prime is 2115011321. The reversal of 2115011313 is 3131105112.

It can be written as a sum of positive squares in only one way, i.e., 1718682849 + 396328464 = 41457^2 + 19908^2 .

It is not a de Polignac number, because 2115011313 - 2² = 2115011309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2115011303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117500620 + ... + 117500637.

Almost surely, 2^2115011313 is an apocalyptic number.

It is an amenable number.

2115011313 is a deficient number, since it is larger than the sum of its proper divisors (940005041).

2115011313 is a wasteful number, since it uses less digits than its factorization.

2115011313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235001263 (or 235001260 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 2115011313 is about 45989.2521465614. The cubic root of 2115011313 is about 1283.6232208162.

Adding to 2115011313 its reverse (3131105112), we get a palindrome (5246116425).

The spelling of 2115011313 in words is "two billion, one hundred fifteen million, eleven thousand, three hundred thirteen".