47831117 has 2 divisors, whose sum is σ = 47831118. Its totient is φ = 47831116.

The previous prime is 47831111. The next prime is 47831129. The reversal of 47831117 is 71113874.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46936201 + 894916 = 6851^2 + 946^2 .

It is a cyclic number.

It is not a de Polignac number, because 47831117 - 2²⁴ = 31053901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47831111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23915558 + 23915559.

It is an arithmetic number, because the mean of its divisors is an integer number (23915559).

Almost surely, 2^47831117 is an apocalyptic number.

It is an amenable number.

47831117 is a deficient number, since it is larger than the sum of its proper divisors (1).

47831117 is an equidigital number, since it uses as much as digits as its factorization.

47831117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 32.

The square root of 47831117 is about 6916.0044100622. The cubic root of 47831117 is about 362.9973944114.

The spelling of 47831117 in words is "forty-seven million, eight hundred thirty-one thousand, one hundred seventeen".