220447313 has 8 divisors (see below), whose sum is σ = 233804232. Its totient is φ = 207133696.

The previous prime is 220447301. The next prime is 220447333. The reversal of 220447313 is 313744022.

It can be written as a sum of positive squares in 4 ways, for example, as 4592449 + 215854864 = 2143^2 + 14692^2 .

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 220447313 - 2⁸ = 220447057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220447333) 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, 20 + ... + 20997.

It is an arithmetic number, because the mean of its divisors is an integer number (29225529).

Almost surely, 2^220447313 is an apocalyptic number.

It is an amenable number.

220447313 is a deficient number, since it is larger than the sum of its proper divisors (13356919).

220447313 is a wasteful number, since it uses less digits than its factorization.

220447313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21651.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 220447313 is about 14847.4682353592. The cubic root of 220447313 is about 604.0899397155.

The spelling of 220447313 in words is "two hundred twenty million, four hundred forty-seven thousand, three hundred thirteen".