47450831 has 2 divisors, whose sum is σ = 47450832. Its totient is φ = 47450830.

The previous prime is 47450813. The next prime is 47450833. The reversal of 47450831 is 13805474.

47450831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (47450813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47450831 - 2¹⁰ = 47449807 is a prime.

It is a super-2 number, since 2×47450831² = 4503162725181122, which contains 22 as substring.

Together with 47450833, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47450833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23725415 + 23725416.

It is an arithmetic number, because the mean of its divisors is an integer number (23725416).

Almost surely, 2^47450831 is an apocalyptic number.

47450831 is a deficient number, since it is larger than the sum of its proper divisors (1).

47450831 is an equidigital number, since it uses as much as digits as its factorization.

47450831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 47450831 is about 6888.4563582852. The cubic root of 47450831 is about 362.0328180619.

The spelling of 47450831 in words is "forty-seven million, four hundred fifty thousand, eight hundred thirty-one".