5120405131 has 2 divisors, whose sum is σ = 5120405132. Its totient is φ = 5120405130.

The previous prime is 5120405063. The next prime is 5120405243. The reversal of 5120405131 is 1315040215.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5120405131 - 2²⁷ = 4986187403 is a prime.

It is a super-2 number, since 2×5120405131² = 52437097411142254322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5120445131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560202565 + 2560202566.

It is an arithmetic number, because the mean of its divisors is an integer number (2560202566).

Almost surely, 2^5120405131 is an apocalyptic number.

5120405131 is a deficient number, since it is larger than the sum of its proper divisors (1).

5120405131 is an equidigital number, since it uses as much as digits as its factorization.

5120405131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 5120405131 is about 71557.0061629188. The cubic root of 5120405131 is about 1723.5932106328.

Adding to 5120405131 its reverse (1315040215), we get a palindrome (6435445346).

The spelling of 5120405131 in words is "five billion, one hundred twenty million, four hundred five thousand, one hundred thirty-one".