47311913 has 8 divisors (see below), whose sum is σ = 51671136. Its totient is φ = 42962400.

The previous prime is 47311907. The next prime is 47311931. The reversal of 47311913 is 31911374.

It is a happy number.

47311913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47311913 - 2¹² = 47307817 is a prime.

It is a super-2 number, since 2×47311913² = 4476834223439138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47311973) 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 in 7 ways as a sum of consecutive naturals, for example, 11045 + ... + 14717.

It is an arithmetic number, because the mean of its divisors is an integer number (6458892).

Almost surely, 2^47311913 is an apocalyptic number.

It is an amenable number.

47311913 is a deficient number, since it is larger than the sum of its proper divisors (4359223).

47311913 is a wasteful number, since it uses less digits than its factorization.

47311913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4855.

The product of its digits is 2268, while the sum is 29.

The square root of 47311913 is about 6878.3655762107. The cubic root of 47311913 is about 361.6791745576.

The spelling of 47311913 in words is "forty-seven million, three hundred eleven thousand, nine hundred thirteen".