1020103123013 has 4 divisors (see below), whose sum is σ = 1098572594028. Its totient is φ = 941633652000.

The previous prime is 1020103123009. The next prime is 1020103123033. The reversal of 1020103123013 is 3103213010201.

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 705804974884 + 314298148129 = 840122^2 + 560623^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020103123013 - 2² = 1020103123009 is a prime.

It is a super-2 number, since 2×1020103123013² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020103122982 and 1020103123000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020103123033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39234735488 + ... + 39234735513.

It is an arithmetic number, because the mean of its divisors is an integer number (274643148507).

Almost surely, 2^{1020103123013} is an apocalyptic number.

1020103123013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1020103123013 is a deficient number, since it is larger than the sum of its proper divisors (78469471015).

1020103123013 is an equidigital number, since it uses as much as digits as its factorization.

1020103123013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78469471014.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1020103123013 its reverse (3103213010201), we get a palindrome (4123316133214).

The spelling of 1020103123013 in words is "one trillion, twenty billion, one hundred three million, one hundred twenty-three thousand, thirteen".