47431117 has 4 divisors (see below), whose sum is σ = 47464380. Its totient is φ = 47397856.

The previous prime is 47431079. The next prime is 47431121. The reversal of 47431117 is 71113474.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71113474 = 2 ⋅35556737.

It can be written as a sum of positive squares in 2 ways, for example, as 27815076 + 19616041 = 5274^2 + 4429^2 .

It is a cyclic number.

It is not a de Polignac number, because 47431117 - 2¹¹ = 47429069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47431127) 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 in 3 ways as a sum of consecutive naturals, for example, 14392 + ... + 17377.

It is an arithmetic number, because the mean of its divisors is an integer number (11866095).

Almost surely, 2^47431117 is an apocalyptic number.

It is an amenable number.

47431117 is a deficient number, since it is larger than the sum of its proper divisors (33263).

47431117 is a wasteful number, since it uses less digits than its factorization.

47431117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33262.

The product of its digits is 2352, while the sum is 28.

The square root of 47431117 is about 6887.0252649457. The cubic root of 47431117 is about 361.9826742010.

The spelling of 47431117 in words is "forty-seven million, four hundred thirty-one thousand, one hundred seventeen".