221000313 has 8 divisors (see below), whose sum is σ = 296163648. Its totient is φ = 146585264.

The previous prime is 221000281. The next prime is 221000327. The reversal of 221000313 is 313000122.

It is a happy number.

221000313 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 221000313 - 2⁵ = 221000281 is a prime.

It is a super-2 number, since 2×221000313² = 97682276692195938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221000363) 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, 186381 + ... + 187562.

It is an arithmetic number, because the mean of its divisors is an integer number (37020456).

Almost surely, 2^221000313 is an apocalyptic number.

It is an amenable number.

221000313 is a deficient number, since it is larger than the sum of its proper divisors (75163335).

221000313 is a wasteful number, since it uses less digits than its factorization.

221000313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374143.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 221000313 is about 14866.0792746440. The cubic root of 221000313 is about 604.5946450280.

Adding to 221000313 its reverse (313000122), we get a palindrome (534000435).

The spelling of 221000313 in words is "two hundred twenty-one million, three hundred thirteen", and thus it is an aban number.