113103121013 has 4 divisors (see below), whose sum is σ = 113105218668. Its totient is φ = 113101023360.

The previous prime is 113103120973. The next prime is 113103121037. The reversal of 113103121013 is 310121301311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310121301311 = 335213 ⋅925147.

It can be written as a sum of positive squares in 2 ways, for example, as 92898772849 + 20204348164 = 304793^2 + 142142^2 .

It is a cyclic number.

It is not a de Polignac number, because 113103121013 - 2¹⁰ = 113103119989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113103120982 and 113103121000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113103121213) 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, 965756 + ... + 1076517.

It is an arithmetic number, because the mean of its divisors is an integer number (28276304667).

Almost surely, 2^113103121013 is an apocalyptic number.

It is an amenable number.

113103121013 is a deficient number, since it is larger than the sum of its proper divisors (2097655).

113103121013 is an equidigital number, since it uses as much as digits as its factorization.

113103121013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097654.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 113103121013 its reverse (310121301311), we get a palindrome (423224422324).

The spelling of 113103121013 in words is "one hundred thirteen billion, one hundred three million, one hundred twenty-one thousand, thirteen".