1003020113 has 4 divisors (see below), whose sum is σ = 1004783460. Its totient is φ = 1001256768.

The previous prime is 1003020079. The next prime is 1003020149. The reversal of 1003020113 is 3110203001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3110203001 = 1103 ⋅2819767.

It can be written as a sum of positive squares in 2 ways, for example, as 634687249 + 368332864 = 25193^2 + 19192^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003020113 - 2²⁸ = 734584657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1003020094 and 1003020103.

It is not an unprimeable number, because it can be changed into a prime (1003020163) 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, 880820 + ... + 881957.

It is an arithmetic number, because the mean of its divisors is an integer number (251195865).

Almost surely, 2^1003020113 is an apocalyptic number.

It is an amenable number.

1003020113 is a deficient number, since it is larger than the sum of its proper divisors (1763347).

1003020113 is an equidigital number, since it uses as much as digits as its factorization.

1003020113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763346.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1003020113 is about 31670.4927811362. The cubic root of 1003020113 is about 1001.0056925767.

Adding to 1003020113 its reverse (3110203001), we get a palindrome (4113223114).

The spelling of 1003020113 in words is "one billion, three million, twenty thousand, one hundred thirteen".