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331020222 = 231313730977
BaseRepresentation
bin10011101110101…
…111011110111110
3212001212120101020
4103232233132332
51134220121342
652502525010
711126424351
oct2356573676
9761776336
10331020222
1115a941435
1292a36766
135376c270
1431d6a298
151e0da0ec
hex13baf7be

331020222 has 32 divisors (see below), whose sum is σ = 718193952. Its totient is φ = 101105664.

The previous prime is 331020169. The next prime is 331020233. The reversal of 331020222 is 222020133.

331020222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4803 + ... + 26174.

It is an arithmetic number, because the mean of its divisors is an integer number (22443561).

Almost surely, 2331020222 is an apocalyptic number.

331020222 is an abundant number, since it is smaller than the sum of its proper divisors (387173730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331020222 is a wasteful number, since it uses less digits than its factorization.

331020222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31132.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 331020222 is about 18193.9611409940. The cubic root of 331020222 is about 691.7537283419.

Adding to 331020222 its reverse (222020133), we get a palindrome (553040355).

It can be divided in two parts, 3310 and 20222, that added together give a palindrome (23532).

The spelling of 331020222 in words is "three hundred thirty-one million, twenty thousand, two hundred twenty-two".

Divisors: 1 2 3 6 13 26 39 78 137 274 411 822 1781 3562 5343 10686 30977 61954 92931 185862 402701 805402 1208103 2416206 4243849 8487698 12731547 25463094 55170037 110340074 165510111 331020222