47511356831 has 2 divisors, whose sum is σ = 47511356832. Its totient is φ = 47511356830.

The previous prime is 47511356819. The next prime is 47511356909. The reversal of 47511356831 is 13865311574.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47511356831 - 2¹⁰ = 47511355807 is a prime.

It is a super-2 number, since 2×47511356831² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47511356801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23755678415 + 23755678416.

It is an arithmetic number, because the mean of its divisors is an integer number (23755678416).

Almost surely, 2^47511356831 is an apocalyptic number.

47511356831 is a deficient number, since it is larger than the sum of its proper divisors (1).

47511356831 is an equidigital number, since it uses as much as digits as its factorization.

47511356831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 44.

The spelling of 47511356831 in words is "forty-seven billion, five hundred eleven million, three hundred fifty-six thousand, eight hundred thirty-one".