5131331021123 has 16 divisors (see below), whose sum is σ = 5422091913216. Its totient is φ = 4848484677120.

The previous prime is 5131331021101. The next prime is 5131331021129. The reversal of 5131331021123 is 3211201331315.

It is not a de Polignac number, because 5131331021123 - 2¹⁰ = 5131331020099 is a prime.

It is a super-2 number, since 2×5131331021123² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5131331021092 and 5131331021101.

It is not an unprimeable number, because it can be changed into a prime (5131331021129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2801315 + ... + 4255587.

It is an arithmetic number, because the mean of its divisors is an integer number (338880744576).

Almost surely, 2^{5131331021123} is an apocalyptic number.

5131331021123 is a deficient number, since it is larger than the sum of its proper divisors (290760892093).

5131331021123 is a wasteful number, since it uses less digits than its factorization.

5131331021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456994.

The product of its (nonzero) digits is 1620, while the sum is 26.

Adding to 5131331021123 its reverse (3211201331315), we get a palindrome (8342532352438).

The spelling of 5131331021123 in words is "five trillion, one hundred thirty-one billion, three hundred thirty-one million, twenty-one thousand, one hundred twenty-three".