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330230981 = 7918232293
BaseRepresentation
bin10011101011101…
…110110011000101
3212000101110202002
4103223232303011
51134014342411
652433555045
711116626353
oct2353566305
9760343662
10330230981
1115a452473
1292715a85
1353553c62
1431c027d3
151ded133b
hex13aeecc5

330230981 has 8 divisors (see below), whose sum is σ = 334740480. Its totient is φ = 325729872.

The previous prime is 330230959. The next prime is 330230983. The reversal of 330230981 is 189032033.

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 330230981 - 222 = 326036677 is a prime.

It is a super-2 number, since 2×3302309812 = 218105001624444722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330230983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142871 + ... + 145163.

It is an arithmetic number, because the mean of its divisors is an integer number (41842560).

Almost surely, 2330230981 is an apocalyptic number.

It is an amenable number.

330230981 is a deficient number, since it is larger than the sum of its proper divisors (4509499).

330230981 is a wasteful number, since it uses less digits than its factorization.

330230981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4195.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 330230981 is about 18172.2585552815. The cubic root of 330230981 is about 691.2035153448.

The spelling of 330230981 in words is "three hundred thirty million, two hundred thirty thousand, nine hundred eighty-one".

Divisors: 1 79 1823 2293 144017 181147 4180139 330230981