5131123533 has 6 divisors (see below), whose sum is σ = 7411622894. Its totient is φ = 3420749016.

The previous prime is 5131123483. The next prime is 5131123541. The reversal of 5131123533 is 3353211315.

5131123533 is a `hidden beast` number, since 5 + 1 + 3 + 1 + 123 + 533 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4957990569 + 173132964 = 70413^2 + 13158^2 .

It is not a de Polignac number, because 5131123533 - 2³⁰ = 4057381709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5131123497 and 5131123506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5131123553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 285062410 + ... + 285062427.

Almost surely, 2^5131123533 is an apocalyptic number.

It is an amenable number.

5131123533 is a deficient number, since it is larger than the sum of its proper divisors (2280499361).

5131123533 is a wasteful number, since it uses less digits than its factorization.

5131123533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570124843 (or 570124840 counting only the distinct ones).

The product of its digits is 4050, while the sum is 27.

The square root of 5131123533 is about 71631.8611582863. The cubic root of 5131123533 is about 1724.7950223989.

Adding to 5131123533 its reverse (3353211315), we get a palindrome (8484334848).

The spelling of 5131123533 in words is "five billion, one hundred thirty-one million, one hundred twenty-three thousand, five hundred thirty-three".