47985631 has 2 divisors, whose sum is σ = 47985632. Its totient is φ = 47985630.

The previous prime is 47985593. The next prime is 47985649. The reversal of 47985631 is 13658974.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47985631 - 2¹¹ = 47983583 is a prime.

It is a super-2 number, since 2×47985631² = 4605241564936322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47985031) 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, 23992815 + 23992816.

It is an arithmetic number, because the mean of its divisors is an integer number (23992816).

Almost surely, 2^47985631 is an apocalyptic number.

47985631 is a deficient number, since it is larger than the sum of its proper divisors (1).

47985631 is an equidigital number, since it uses as much as digits as its factorization.

47985631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 47985631 is about 6927.1661594046. The cubic root of 47985631 is about 363.3878507725.

The spelling of 47985631 in words is "forty-seven million, nine hundred eighty-five thousand, six hundred thirty-one".