5181306731 has 2 divisors, whose sum is σ = 5181306732. Its totient is φ = 5181306730.

The previous prime is 5181306703. The next prime is 5181306769. The reversal of 5181306731 is 1376031815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5181306731 - 2¹⁴ = 5181290347 is a prime.

It is a super-2 number, since 2×5181306731² = 53691878881411812722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5181306691 and 5181306700.

It is not a weakly prime, because it can be changed into another prime (5181306791) 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 as a sum of consecutive naturals, namely, 2590653365 + 2590653366.

It is an arithmetic number, because the mean of its divisors is an integer number (2590653366).

Almost surely, 2^5181306731 is an apocalyptic number.

5181306731 is a deficient number, since it is larger than the sum of its proper divisors (1).

5181306731 is an equidigital number, since it uses as much as digits as its factorization.

5181306731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 5181306731 is about 71981.2943131756. The cubic root of 5181306731 is about 1730.3997128457.

The spelling of 5181306731 in words is "five billion, one hundred eighty-one million, three hundred six thousand, seven hundred thirty-one".