105115013 has 4 divisors (see below), whose sum is σ = 105218988. Its totient is φ = 105011040.

The previous prime is 105115009. The next prime is 105115019. The reversal of 105115013 is 310511501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53246209 + 51868804 = 7297^2 + 7202^2 .

It is a cyclic number.

It is not a de Polignac number, because 105115013 - 2² = 105115009 is a prime.

It is a super-2 number, since 2×105115013² = 22098331915980338, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105114982 and 105115000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105115019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50456 + ... + 52497.

It is an arithmetic number, because the mean of its divisors is an integer number (26304747).

Almost surely, 2^105115013 is an apocalyptic number.

It is an amenable number.

105115013 is a deficient number, since it is larger than the sum of its proper divisors (103975).

105115013 is a wasteful number, since it uses less digits than its factorization.

105115013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103974.

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 105115013 is about 10252.5612897461. The cubic root of 105115013 is about 471.9415879190.

Adding to 105115013 its reverse (310511501), we get a palindrome (415626514).

The spelling of 105115013 in words is "one hundred five million, one hundred fifteen thousand, thirteen".