20131302113 has 4 divisors (see below), whose sum is σ = 21679863828. Its totient is φ = 18582740400.

The previous prime is 20131302101. The next prime is 20131302179. The reversal of 20131302113 is 31120313102.

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 11993097169 + 8138204944 = 109513^2 + 90212^2 .

It is a cyclic number.

It is not a de Polignac number, because 20131302113 - 2⁶ = 20131302049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20131302091 and 20131302100.

It is not an unprimeable number, because it can be changed into a prime (20131302193) 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, 774280838 + ... + 774280863.

It is an arithmetic number, because the mean of its divisors is an integer number (5419965957).

Almost surely, 2^20131302113 is an apocalyptic number.

It is an amenable number.

20131302113 is a deficient number, since it is larger than the sum of its proper divisors (1548561715).

20131302113 is a wasteful number, since it uses less digits than its factorization.

20131302113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548561714.

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

Adding to 20131302113 its reverse (31120313102), we get a palindrome (51251615215).

The spelling of 20131302113 in words is "twenty billion, one hundred thirty-one million, three hundred two thousand, one hundred thirteen".