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220310147 = 619355913
BaseRepresentation
bin11010010000110…
…10101010000011
3120100112220201002
431020122222003
5422344411042
633510002215
75313414431
oct1510325203
9510486632
10220310147
111033a5302
126194636b
1336848945
142138bd51
151451c132
hexd21aa83

220310147 has 4 divisors (see below), whose sum is σ = 220666680. Its totient is φ = 219953616.

The previous prime is 220310141. The next prime is 220310161. The reversal of 220310147 is 741013022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 741013022 = 2370506511.

It is a cyclic number.

It is not a de Polignac number, because 220310147 - 226 = 153201283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220310141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177338 + ... + 178575.

It is an arithmetic number, because the mean of its divisors is an integer number (55166670).

Almost surely, 2220310147 is an apocalyptic number.

220310147 is a deficient number, since it is larger than the sum of its proper divisors (356533).

220310147 is an equidigital number, since it uses as much as digits as its factorization.

220310147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356532.

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

The square root of 220310147 is about 14842.8483452469. The cubic root of 220310147 is about 603.9646221037.

Adding to 220310147 its reverse (741013022), we get a palindrome (961323169).

The spelling of 220310147 in words is "two hundred twenty million, three hundred ten thousand, one hundred forty-seven".

Divisors: 1 619 355913 220310147