47021313 has 4 divisors (see below), whose sum is σ = 62695088. Its totient is φ = 31347540.

The previous prime is 47021297. The next prime is 47021323. The reversal of 47021313 is 31312074.

47021313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 47021313 - 2⁴ = 47021297 is a prime.

It is a super-2 number, since 2×47021313² = 4422007752487938, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47021313.

It is not an unprimeable number, because it can be changed into a prime (47021323) 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 3 ways as a sum of consecutive naturals, for example, 7836883 + ... + 7836888.

It is an arithmetic number, because the mean of its divisors is an integer number (15673772).

Almost surely, 2^47021313 is an apocalyptic number.

It is an amenable number.

47021313 is a deficient number, since it is larger than the sum of its proper divisors (15673775).

47021313 is a wasteful number, since it uses less digits than its factorization.

47021313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15673774.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 47021313 is about 6857.2088345040. The cubic root of 47021313 is about 360.9371493522.

Adding to 47021313 its reverse (31312074), we get a palindrome (78333387).

The spelling of 47021313 in words is "forty-seven million, twenty-one thousand, three hundred thirteen".