39513513131 has 2 divisors, whose sum is σ = 39513513132. Its totient is φ = 39513513130.

The previous prime is 39513513089. The next prime is 39513513161. The reversal of 39513513131 is 13131531593.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39513513131 - 2¹⁰ = 39513512107 is a prime.

It is a super-2 number, since 2×39513513131² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 39513513091 and 39513513100.

It is not a weakly prime, because it can be changed into another prime (39513513161) 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, 19756756565 + 19756756566.

It is an arithmetic number, because the mean of its divisors is an integer number (19756756566).

Almost surely, 2^39513513131 is an apocalyptic number.

39513513131 is a deficient number, since it is larger than the sum of its proper divisors (1).

39513513131 is an equidigital number, since it uses as much as digits as its factorization.

39513513131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18225, while the sum is 35.

The spelling of 39513513131 in words is "thirty-nine billion, five hundred thirteen million, five hundred thirteen thousand, one hundred thirty-one".