5134531991 has 2 divisors, whose sum is σ = 5134531992. Its totient is φ = 5134531990.

The previous prime is 5134531957. The next prime is 5134532017. The reversal of 5134531991 is 1991354315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5134531991 - 2¹⁰ = 5134530967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5134531931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2567265995 + 2567265996.

It is an arithmetic number, because the mean of its divisors is an integer number (2567265996).

Almost surely, 2^5134531991 is an apocalyptic number.

5134531991 is a deficient number, since it is larger than the sum of its proper divisors (1).

5134531991 is an equidigital number, since it uses as much as digits as its factorization.

5134531991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72900, while the sum is 41.

The square root of 5134531991 is about 71655.6487026668. The cubic root of 5134531991 is about 1725.1768484654.

The spelling of 5134531991 in words is "five billion, one hundred thirty-four million, five hundred thirty-one thousand, nine hundred ninety-one".