106503013 has 4 divisors (see below), whose sum is σ = 106601548. Its totient is φ = 106404480.

The previous prime is 106502989. The next prime is 106503017. The reversal of 106503013 is 310305601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310305601 = 79 ⋅3927919.

It can be written as a sum of positive squares in 2 ways, for example, as 79691329 + 26811684 = 8927^2 + 5178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106503013 is a prime.

It is a super-2 number, since 2×106503013² = 22685783556156338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106503017) 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, 47628 + ... + 49813.

It is an arithmetic number, because the mean of its divisors is an integer number (26650387).

Almost surely, 2^106503013 is an apocalyptic number.

It is an amenable number.

106503013 is a deficient number, since it is larger than the sum of its proper divisors (98535).

106503013 is an equidigital number, since it uses as much as digits as its factorization.

106503013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98534.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 106503013 is about 10320.0296995697. The cubic root of 106503013 is about 474.0097753567.

Adding to 106503013 its reverse (310305601), we get a palindrome (416808614).

The spelling of 106503013 in words is "one hundred six million, five hundred three thousand, thirteen".