5131120013 has 4 divisors (see below), whose sum is σ = 5432950620. Its totient is φ = 4829289408.

The previous prime is 5131119989. The next prime is 5131120019. The reversal of 5131120013 is 3100211315.

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 3278936644 + 1852183369 = 57262^2 + 43037^2 .

It is a cyclic number.

It is not a de Polignac number, because 5131120013 - 2¹⁰ = 5131118989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 301830589 = 5131120013 / (5 + 1 + 3 + 1 + 1 + 2 + 0 + 0 + 1 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5131119973 and 5131120000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5131120019) 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, 150915278 + ... + 150915311.

It is an arithmetic number, because the mean of its divisors is an integer number (1358237655).

Almost surely, 2^5131120013 is an apocalyptic number.

It is an amenable number.

5131120013 is a deficient number, since it is larger than the sum of its proper divisors (301830607).

5131120013 is a wasteful number, since it uses less digits than its factorization.

5131120013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301830606.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 5131120013 is about 71631.8365882099. The cubic root of 5131120013 is about 1724.7946279901.

Adding to 5131120013 its reverse (3100211315), we get a palindrome (8231331328).

The spelling of 5131120013 in words is "five billion, one hundred thirty-one million, one hundred twenty thousand, thirteen".