47310221 has 8 divisors (see below), whose sum is σ = 54110784. Its totient is φ = 40520160.

The previous prime is 47310217. The next prime is 47310227. The reversal of 47310221 is 12201374.

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 47310221 - 2² = 47310217 is a prime.

It is a super-2 number, since 2×47310221² = 4476514022137682, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 47310193 and 47310202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47310227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14486 + ... + 17448.

It is an arithmetic number, because the mean of its divisors is an integer number (6763848).

Almost surely, 2^47310221 is an apocalyptic number.

It is an amenable number.

47310221 is a deficient number, since it is larger than the sum of its proper divisors (6800563).

47310221 is a wasteful number, since it uses less digits than its factorization.

47310221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5251.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 47310221 is about 6878.2425807760. The cubic root of 47310221 is about 361.6748629694.

Adding to 47310221 its reverse (12201374), we get a palindrome (59511595).

The spelling of 47310221 in words is "forty-seven million, three hundred ten thousand, two hundred twenty-one".