47216311 has 4 divisors (see below), whose sum is σ = 49701400. Its totient is φ = 44731224.

The previous prime is 47216303. The next prime is 47216339. The reversal of 47216311 is 11361274.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47216311 - 2³ = 47216303 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 (47516311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1242516 + ... + 1242553.

It is an arithmetic number, because the mean of its divisors is an integer number (12425350).

Almost surely, 2^47216311 is an apocalyptic number.

47216311 is a deficient number, since it is larger than the sum of its proper divisors (2485089).

47216311 is a wasteful number, since it uses less digits than its factorization.

47216311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2485088.

The product of its digits is 1008, while the sum is 25.

The square root of 47216311 is about 6871.4125913090. The cubic root of 47216311 is about 361.4353982637.

Adding to 47216311 its reverse (11361274), we get a palindrome (58577585).

The spelling of 47216311 in words is "forty-seven million, two hundred sixteen thousand, three hundred eleven".